Stockable recipes are recipes that aren’t sold directly to the customer as a dish. They are part of other menu items such as sauces, pre-made batches of homemade drinks, etc. Keeping an inventory of the stockable items, allows you to keep track of the pre-made recipes in your inventory.
These days restaurant inventory management is often automated using dedicated software platforms.
This is especially important for F&B concepts that have a central kitchen or central production unit (CPU) so that internal ordering is easy.