You can invite friends from the map screen by tapping the invite button. This button are usually located at the edge of the screen. Find out!
You can enjoy the game of Cook's App by yourself. However, when you want to get free coins, When you lack of lives during the game, you really need game friends.
Invite your Facebook friends and share many of your benefits with your friends. when you help each other, you can easily break even the hardest level.