Coffee Shops:?

Short answer: The Decorator Pattern is ideal for situations like coffee shops, where customers can customize their coffee with various add-ons (milk, sugar, whipped cream, flavor syrups, etc.). Each add-on is a decorator that adds a cost and modifies the description of the order without modifying the core coffee object.

Real-world example (ShopNest)

Use a GoF pattern in ShopNest only when it removes duplication or makes a change safer—explain the problem it solves in the interview.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.