Which piece of equipment does not require sanitizing after cleaning? Prep knife Mixing Bowl Cutting board Cooler door

## Step 1<br />The problem asks us to identify which piece of equipment does not require sanitizing after cleaning. The options provided are a prep knife, a mixing bowl, a cutting board, and a cooler door.<br /><br />## Step 2<br />We need to consider the nature of each item. A prep knife, a mixing bowl, and a cutting board are all items that come into direct contact with food. Therefore, they need to be sanitized after cleaning to prevent cross-contamination.<br /><br />## Step 3<br />On the other hand, a cooler door does not come into direct contact with food. It is a part of the cooler that is used to store food, but it does not touch the food itself. Therefore, it does not need to be sanitized after cleaning.