Where to find it
You can find the Cook Off event in the upper left corner of your screen, or you can open it directly from the News Board.

How to play
To play the Cook Off event you'll need to get ingredients. You can get ingredients from the following three ways:
  1. Spend 5 Energy (to get 1 ingredient)
  2. Complete a Helicopter Order (get 100 ingredients)
  3. Complete a Board Order (get 10 ingredients)
Once you've collected enough ingredients, you can tap on the 'START' button to start the event. Starting the event will consume ingredients, and you must have at least 20 ingredients to start.

During the Cook Off event, you'll have to manage certain goals to get more points, which give more Tips and Coupons. Goals can be requirements like "don't burn the food" and "serve a specified number of customers within the time limit".
While serving your customers, you earn Tips and Coupons. Tips are used to upgrade your Kitchen or increase the price of your food (which, in turn, allows you to earn more during the event). Your rewards are dependent on how many Coupons you managed to accumulate.

Activate the Gold Cook Off Pass to earn more valuable rewards!