Hi Chef,
You will be able to win 3 types of Chef Boxes upon winning a Chef Masters game (Bronze, Silver Gold). These Boxes contain Chef Cards, Dish Cards, Appliance Cards, Coins and Goodies.
Note: Chef Boxes are the main source of Chef Cards, Appliance Cards and Dish Cards in the game. These can be further used to improve Dishes and Upgrade Chefs and improve their attributes.