With Sprwt you can create a portion size for your catering and proposal meal recipes. Let's take an example where you have a dish for a single serving for a proposal event but if you do online ordering you may sell them by the pan.

To get started go to admin > kitchen settings > portion sizes > catering and click the add portion to catering. Simply name the portion you want i.e. Pans and hit save.

Now when you go to create a meal recipe, you can click on the catering portion tab and add your pricing and meal quantity limits.