There are several things that can be done with the menus you create. Once you select the menus you want to work with, a footer appears with options for: Inventory, Purchase, Production, and Bulk Delete.
Export: This allows you to export cost reports based on your selected men(s).
Inventory: To learn how to create an inventory from your menus, check out this article (How do I create an inventory cycle count from a set of menus?).
Purchase: To learn how to purchase ingredients from your menus, check out this article (How do I create a purchase order for multiple menus?).
Production: To learn how to create a production packet from your menus, check out this article (Can I view batched production for all the recipes in a menu?).
Bulk Delete: To delete menus that you no longer want, select the recipes, and press the "Bulk Delete" button.