The Walk-in Cookbook is a food store located in Park Slope, Brooklyn that offers pre-portioned ingredients for recipes to cook at home.

40% of all food in America goes to waste, and the mission of the Walk in Cookbook is to help reduce food waste by modernizing the grocery store offering.

It works like this: 1) Select your meal from a range of recipes. 2) Pick up all the essential elements needed for your dish. 3) Cook your meal at home.

Related: The Kochhaus in Berlin.

• www.walkincookbook.com