In the yummy recipe below, I call for U/15 shrimp. This informs you as to the size of shrimp you are shopping for. Shrimp sizes are denoted in numbers, such as U/15 or 21/25. When you see a “U” in the count, it means that there are “under” that number of shrimp in a pound. The slash between numbers denotes a range of shrimp in a pound.

HERE you will find a helpful chart of shrimp sizes.