Chef'n SleekStor Pinch+Pour Prep Bowl Set (Arugula) Keep organized while preparing favorite dishes with this set of multi-function nesting prep bowls. With clearly marked measurements for wet and dry ingredients, there is no need for additional measuring cups or spoons. Pinch the bowl frame to create a pour spout for liquids and powdered ingredients. Nest the bowls together to store when not in use. These bowls are dishwasher safe on the top rack and are not recommended for use in the microwave.