Game guide:Completing the Cooking skill challenge

How To Complete Cooking Skill Challenge
There is 3 Challenges on Cooking Skill, Sim with Natural Cook trait can complete it more easily.

Star Chef

Star Chefs have prepared at least 50 meals, so they clearly know their way around the kitchen. The dishes they prepare are more pleasing to those that eat them.

How To Unlock: prepare 50 meals. its more easy if your sim is normal because they need to eat food not drink a plasma.

World-Class Chef

World-Class Chefs have prepared at least 75 dishes and are masters of the kitchen. World-Class chefs are known to prepare meals significantly faster.

How To Unlock: prepare 75 meals, its more easy if your sim is normal because they need to eat 'food 'not drink a plasma.

Menu Maven

Menu Mavens have learned to prepare all recipes. Recipes are earned by improving the cooking skill and can be purchased at the bookstore. Menu Mavens prepare higher quality food.

How To Unlock: your sims must mastered their cooking skill, buy every recipes on bookstore ''and read it. you need to learn all 28 recipes from the base game. recipes from world adventures doesnt count.''