Setup:
Make one sim
Complete the Cooking, Drink Making, and Grilled Cheese Aspirations and max skills using cheats
Create a kitchen(Refrigerator, Stove, 5 Counters, Grill, Microwave, Coffee Maker, Sink, Bar, and Cupcake Maker) on your house lot using cheats
Buy a Retail Store with nothing on it
Gameplay:
Start with 1,000 money
Cook food and sell on retail lot
Get two other cooks and have them complete the Aspirations and max skills with cheats
Buy two more kitchens
Get 10,000 money, 3 cooks, and 3 kitchens to complete the challenge