Boosters
Boosters are power-ups that make it easier to complete levels and help you serve as many customers as possible.
You can see your available boosters on the main screen above the «Play» button. If the area is empty, it means there are currently no boosters available.
Boosters can be earned as rewards from events, by upgrading your restaurant to the maximum level, or purchased in the shop with real money.
There are currently 3 boosters in the game:
Kitchen Knight
No need to spend time cooking — food is prepared instantly.
Thermo Shield
No need to worry about burnt food — it won’t burn anymore.
Royal Feast
Earn more in-game currency — the value of prepared dishes increases by 25%.
Boosters are active for a limited time and disappear once their duration ends.
Trash Can
The Trash Can 
The Trash Bin is available during levels and can be used an unlimited number of times.