Mustard Clinic: McKinsey-Style Profitability Case Interview
Mustard Clinic is a medium-difficulty McKinsey-style profitability case interview with 8 interviewer questions and 2 exhibits; candidates finish it in a median 28 minutes. Your first full case is free with an account: run it out loud with an AI interviewer or step by step.
| Case type | Profitability |
|---|---|
| Industry | Healthcare |
| Firm style | McKinsey |
| Difficulty | Medium |
| Interviewer questions | 8: context, clarifying, structure, 3 math, analysis, synthesis |
| Math questions | 3 |
| Exhibits | 2 |
| Modes | Voice and guided |
| Completed runs | 16 |
| Median time | 28 minutes |
| Source | Adapted from an MBA consulting club casebook |
Runs, times and ratings are from Road to Offer practice data as of 6 November 2026.
The case
Your client is the CEO of the Mustard Clinic, a for-profit hospital in the United States known primarily for its leading care for babies and young children. Patients pay a fixed fee to access services on arrival, and all subsequent costs are borne by the Clinic. The hospital is facing bankruptcy; last year it lost $1.4m. The CEO asks: what is driving the loss, and how can we restore profitability?
Exhibits you will read
- Exhibit A - Key hospital unit metrics
- Exhibit B - Cost structure
What this case tests
Three math steps, two exhibits and one analysis question: this case is mostly about fast, accurate case math.