A strong recommendation answers the original question first, then gives the two or three pieces of evidence that matter most. Do not replay the entire case chronologically.

Use a simple structure: recommendation, supporting evidence, key risk, and next step. The recommendation should sound like a decision, not a summary of analysis.

Practice the last sixty seconds separately from full cases. Record yourself and check whether the first sentence already tells the client what you think they should do. If useful, this guide on case interview insight generation gives more detail.