A donut you can make :D
I Ran a Bakery That Brings Customers Only Pain - Cooking Simulator Cakes and Cookies
Video from Let's Game it out, where he makes infinite jelly beans and weird cakes.
Cooking Simulator - Cakes and Cookies is a DLC for Cooking Simulator released on June 11, 2020 on Steam, and on 9/15/2022 on Xbox.
The DLC contains a new bakery, filled with pastry-related food such as dough, jelly beans, sprinkles, and more.
Cakes and Cookies features a clock. When it passes through a day, the pastries you place on the window trays will get sold. You can skip the day by interacting with the clock. In Sandbox mode, it does not pass naturally, but you can still interact with the clock to sell your current pastries.
The Bakery is styled after a European bakery.