Go to INVENTORY -> SKU to enter the page.
In this page, you can view the usage of SKUs, their respective yields and costs.
Click on the numbers displayed under Recipes column to view the usage of SKUs as ingredients in the recipes.
In the above example, "54% Dark Chocolate- Vanhouten" is used as an ingredient in 14 recipes.
In this page, items are tagged based on your categorization. These categorizations are customizable i.e, you can also apply multiple categories as per your requirements.
In this case, a categorization called SKU Type is applied to this module.
As shown below, the item and tag that are selected/tagged are highlighted in blue color.
Now you see "Absoult Vodka" item is tagged under "Liquor"
Untagged items are checked and tagged using Show untagged checkbox as shown below.