Create an LOCATION that you can move your Products to when they are consumed

The Outgoing Stock Valuation account is the Expense account you want debited when you consume the product(s).

If you have more than one Expense account, create more than one location.

Then create a Scrap operation each time you consume something

This will decrease your inventory quantity and value, and expense the cost.

From the location you can see all products that have been consumed.