What this covers
Step by step how I would solve an actual McKinsey case: https://www.mckinsey.com/careers/interviewing/electrolight
I occasionally write stuff here: https://mattsmusings.substack.com/
Need help? Book a 1:1 call: https://stan.store/matthuang21
0:00 Intro 0:45 Case prompt 1:56 What to do at the beginning of the case 3:23 Clarifying questions 5:26 Build a framework 7:31 Present framework to interviewer 12:07 Quantitative section 12:41 Analyzing an exhibit 15:02 Calculating what % of the mkt we need to break even 21:32 Brainstorming section 24:54 Recommendation / Synthesis
#managementconsulting #caseinterview #mckinsey #consulting
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Matt demonstrates a systematic framework for solving management consulting case interviews through a McKinsey-style product launch case, showing that the key to success is structured thinking (frameworks), quantitative analysis (break-even calculation), and synthesis rather than raw intelligence.
- A business situation framework organizing analysis into Customer, Competition, Company, and Product buckets handles most strategy cases
- Quantitative rigor (calculating 12.5% market share needed to break even) grounds qualitative recommendations in data
- Synthesis (context + recommendation + risks + next steps) demonstrates strategic communication to executives
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The final recommendation synthesis should follow a structured format: restate context briefly (≤10 seconds), provide the core recommendation, outline potential risks, and propose next steps, to clearly communicate strategy to executives.
“the structure that you generally want to follow is you want to first start with either restating the context and make this super quick because you don't need to belabor the point here they already the CEO already know knows what's going on at the company but you might want to restate it quickly and then you want to give your recommendation this is the meat of it you want to follow up with some potential risks and then you want to end with some next steps”
The primary driver of success in case interviews is demonstrating structured thinking through frameworks rather than arriving at a correct answer, because frameworks show the interviewer how you think about problems systematically.
“what's known as the business situation framework it's a very common framework but it works very well with a lot of Consulting cases”
Frameworks should contain 3-5 mutually exclusive and collectively exhaustive (MECE) buckets to ensure you capture the entire universe of possibilities without overlap and avoid missing critical options.
“you want to make them as Mei as possible which means mutually exclusive and collectively exhaustive simply meaning that the buckets the topics in your framework should not have any kind of overlap if possible and also they should Encompass the entire universe of possibilities”
Asking clarifying questions demonstrates to the interviewer that you are listening and thinking thoughtfully, even if your questions don't uncover major new information.
“the reason why you want to ask clarifying questions is not only to make sure that you understand the prompt correctly and to dig maybe a little bit deeper but also because you really need to demonstrate to the interviewer that you are listening and thinking thoughtfully about the prompt and the company”
Taking notes during the case prompt helps you capture key information and signals engagement, and you should restate what you heard to ensure complete understanding.
“the first thing that we always want to do when we are given a case prompt is we want to obviously take quick notes while the interviewer is giving you the prompt”
Brainstorming sections of cases are less formal than other sections and candidates can be more casual while listing ideas, and it's acceptable to ask for 30 seconds to think if you don't have immediate ideas.
“typically in a brainstorming section you're just trying to come up with as many ideas as possible to the question which in this case is what would they need to do in order to actually get that 12.5% market share and so it's also okay here to ask for just 30 seconds if you don't have have any ideas in mind but if you do have a few ideas already in mind feel free to just go ahead and start listing out ideas to your interviewer because this this part of the case tends to be a little bit more casual”
There are multiple ways to reach the correct solution in a case interview, and the approach Matt is demonstrating is just one valid approach among several possible approaches.
“keep in mind that there are multiple ways to get to the right solution in a case and so what I'm going to show you today is just my Approach feel free to take a different approach if you think that is more appropriate”
Customer analysis should focus on customer segmentation (identifying different customer groups being targeted) and customer preferences (understanding what the target customer values and cares about).
“going back to my first bucket which is the customer here I would be most interested in one the customer segmentation otherwise known as you know the different customer groups that we are going to be going after for example are we going after wealthy individuals with a lot of income... and second customer preferences what does our Target customer value and what do they care about”
Company analysis should evaluate supply chain capabilities (strength of supply chain, ability to produce and distribute) and sales and marketing capabilities (strength of team and past experience with product launches).
“thirdly the company I'm interested in two things what do our supply chain capabilities look like and two what about our sales and marketing capabilities... when I talk about supply chain I'm talking about the strength of our supply chain because if we have a very strong supply chain this will make it easier for us to launch a new product... and then with sales and marketing here I want to just better understand hey how strong is our sales and marketing team and do they have experience in the past with launching a new product”
Sales and marketing campaigns are essential for product launches because building consumer awareness is necessary for purchase consideration, especially when customers encounter the product in-store.
“sales and marketing is super important when we are launching a new product we need to get the word out there that we are launching this new product and we need to properly build awareness in the consumer's mind about this product so that they actually get off the couch and go and buy the product or if they're walking through a convenience store for example they see this produ in the shelves and they're and they think to themselves oh hey I've seen this somewhere let me try it”
Robust distribution channels are critical for consumer packaged goods companies because without proper distribution to retail locations, product availability becomes a bottleneck that prevents capturing potential sales.
“distribution especially when we're talking about cpg consumer package Goods companies is extremely extremely important because if you aren't able to get your products into stores where your customers are then how are you going to maximize your chances of making a sale”
At least three solid ideas should be prepared for brainstorming sections even though more ideas could hypothetically be generated, balancing thoroughness with time management.
“now are these the only three things that you should consider when thinking about can we capture 12.5% market share absolutely not you can come up with a much bigger list than I did but in the context of a case I would try to come up with at least three good solid reasons that you can then discuss with your interviewer”
Competitive pricing is one of the most effective levers for capturing market share because lowering prices directly attracts more customers, though companies must balance this against profit margin erosion.
“pricing is one of the most effective strategies when it comes to capturing market share and if we're only thinking about about capturing as much market share as possible one of the most direct ways that the company can try and capture more customers is by lowering their prices to a very competitive price point now there's a whole set of considerations that go into doing this because you don't want to completely obliterate your profit margins by lowering the price too much but that is one lever that the company has at its disposal”
Case interviews can be either interviewer-led (interviewer guides you through specific buckets) or candidate-led (you identify which buckets to explore), with McKinsey cases typically being interviewer-led.
“there are two things that could happen one is the interviewer could point you towards a certain bucket which is what's known as interviewer-led cases where the interviewer is sort of guiding you towards the right approach or if you're doing an interview Le case they might ask you okay so which bucket do you think is most interesting and that you want to look into first”
The competition bucket should analyze (1) market size and growth trajectory (large/small, growing/shrinking) and (2) competitive landscape (number, size, and market concentration of competitors).
“there's two things that I'm most interested in the first is the market for these kinds of quote unquote healthy low sugar energy drinks is it a large Market is it a small Market if it's a large market then maybe it's a good idea to enter this Market if it's small maybe not so much we can't really make this decision in isolation but it will inform our ultimate recommendation and kind of tied to that is the growth of the market is this Market growing or is it shrinking”
When estimating unit economics in cases involving per-unit costs and prices, always be careful to verify that the units are consistent (both per bottle or both per gallon) and cancel appropriately when performing calculations across different unit types.
“now you have to be careful here though because 400 million what is that is that dollars or bottles it's bottles because the dollar signs here cancel out”
McKinsey case interviews typically present market data exhibits and expect candidates to derive insights from the numbers while showing their analytical process, not just their final answer.
“now they're going to give us an exhibit basically showing us the share of the US Sports string market”
In the Super Soda case, the company needs to capture 12.5% of the electrolyte drinks market to break even, calculated by dividing the $40 million fixed cost investment by the $0.10 per-bottle profit margin to yield 400 million bottles, which converts to 50 million gallons (at 1/8 gallon per bottle) and divided by the 400 million gallon electrolyte market.
“unit profit is basically what we're selling it for which is the price of $2 per bottle minus the cost per bottle which we were given was $11.90 and so how many units do we basically need to sell in order to recoup this $40 million well the way you should do this is divide that 40 million by this profit per bottle”
Two major electrolyte drink competitors—Cool Sweat and Recover Plus—control approximately 20% and 10% of the electrolyte drinks market respectively, with the remaining 70% distributed among smaller competitors.
“we've also been given some detail about the electrolyte drinks Market which is only about 5% of the total us sports drink market and I can see here that there's a few key competitors in the electrolyte drinks Market Cool sweat and recover plus”
When first presented with a case exhibit, candidates should first describe what they see aloud to the interviewer before attempting to derive insights, because speaking aloud aids processing and buys time to think.
“the first thing that your brain is often going to want to do is you're going to start wanting to think about like things that you should say right you know you want to sound smart or something and so you want to tell the interviewer some insight that you just thought of but before you do that I implore you my recommendation is that you should actually first just talk aloud and describe what you are seeing to the interviewer”
After quantitative analysis, the analyst should take time to reflect and evaluate what the numbers mean in the context of the business case and whether the resulting targets feel realistic, rather than simply reporting calculations.
“so the next thing that you always want to do after completing the Quant portion of a case is you want to take a step back absorb what you've just learned and think about what this means in the context of the case and whether or not you think this is realistic or not”
Specific clarifying questions to ask in a product launch case include: (1) whether prior research or testing has been done, (2) which specific markets are being targeted, and (3) whether competitors have already launched similar products.
“the first one is have they tried anything already this basically just means has the company done any research or has management tried anything to test whether or not launching this new product into the market would be a success or not”
The risks to successful electrolyte launch include the possibility that the launch strategy may not achieve anticipated results due to competitor strength or execution failures in distribution.
“despite our optimistic Outlook there are obviously some risks as well including the fact that our product launch strategy may not succeed as much as we anticipated due to the strength of our competitors or perhaps our inability to execute effectively on our distribution”
The unit profit of $0.10 per bottle ($2.00 retail price minus $1.90 production cost) is a thin margin that highlights the importance of achieving high market share or managing costs carefully to achieve profitability.
“10 cents per bottle that's the unit that we're dealing with here... number of bottles to break even equals $40 million in fixed costs divided by 10 cents per bottle”
The business situation framework—organizing analysis into Customer, Competition, Company, and Product buckets—works for approximately 90% of business strategy cases.
“I want to caveat that this is not the only thing that could work this is just a easy framework for people to use that works with probably 90% of business strategy cases and so that's why I use it to teach”
When dividing by a percentage or decimal fraction in mental math, convert the operation: dividing by 0.1 (or 1/10) is equivalent to multiplying by 10, which simplifies calculation.
“what we have to remember is that 0.1 is the same as 1 over 10 right and if you guys paid attention in basic division and multiplication class or in basic math class then you should know that when you divide by a fraction you flip it and you multiply by the denominator and so this is the same thing as 40 million * 10”
Matt's recommendation for Super Soda is to proceed with the electrolyte launch, contingent on executing well on pricing competitiveness, robust distribution, and targeted sales and marketing campaigns.
“our recommendation at this moment is to proceed with the launch but also to give heavy consideration to how we go about the launch because we've found through our analysis that we need to capture about 12.5% market share in order to break even and and some levers that we've thought about to achieve this 12.5% market share are ensuring that our pricing is competitive making sure that our distribution channels are robust and able to meet demand and finally just dialing in our sales and marketing campaigns so that we are targeting the right customers where they are”
The brainstorming section should generate ideas focused on capturing market share through pricing, distribution, and marketing rather than other functional areas.
“the first thing I put was competitive pricing now why did I put this well pricing is one of the most effective strategies when it comes to capturing market share the second thing is robust distribution and finally I've put sales and marketing campaigns”
Quantitative cases often become easier with practice, suggesting that case interview preparation benefits from repetition and working through multiple examples.
“I know that this was a absolute ton of math and if you're feeling a little bit overwhelmed right now don't worry these kinds of quantitative questions get much easier with practice”
It's not necessary to restate context in the final recommendation, though Matt personally prefers to do so briefly (≤10 seconds) to ground himself, which he views as acceptable practice.
“I had a few people comment on one of my past videos asking whether or not restating the context was necessary I would say no it's not necessary although I personally do appreciate restating the context just because it helps to ground yourself before you give the recommendation and I think as long as you are keeping it very brief like literally 10 seconds or less then there's no problem with restating the context”
Matt teaches case interviews through video tutorials and offers one-on-one coaching to help candidates identify specific improvement areas.
“I hope that this video is helpful and if you are currently working on your case interview prep and you've looked through a lot of different resources and maybe you're still stuck you might want to also consider some one-on-one coaching with me as well where I can walk you through the case and pinpoint exactly the areas that you can improve on”
Prior consulting experience at BCG (Boston Consulting Group) provides credibility and practical knowledge for teaching case interview methodology.
“my name is Matt I'm a current strategy associate at Google prior to that was a consultant at BCG”
Super Soda's position as a top-3 beverage company provides strategic advantages (end-to-end supply chain control, five large bottling plants, distribution agreements with major retailers) that support the product launch feasibility.
“super soda is a valuating the launch of a new product a flavored sports drink called electrolyte sports drinks are usually designed to replenish energy with sugar and electrolytes or salts in the body however electrolyte has been formulated to focus more on the replenishment of electrolytes and has a lower sugar content compared to most other sports drings the company expects this new beverage to capitalize on the recent Trend away from high sugar products”
Electrolyte's lower sugar content positioning is intended to capitalize on a market trend away from high-sugar products, differentiating it from most existing sports drinks.
“however electrolyte has been formulated to focus more on the replenishment of electrolytes and has a lower sugar content compared to most other sports drings the company expects this new beverage to capitalize on the recent Trend away from high sugar products”