[SL] Indirect income and inventory managent

[Aschwin v. d. W. <asc...@bt...>]

Hi,

Here at work I am taking care of a fancy coffee-machine that uses a
cash-card system for payments, and I decided to use sql-ledger to keep
track of inventory and transactions. The idea is not to make profit on
coffee-sales, but to charge people only the costs involved.

But I have a problem accounting properly for my used inventory.

The sales process is as follows:
    * Cash cards are refilled once in a while and I receive money 
      for this. These transaction are nicely recorded in sql-ledger.
    * People use their cash cards to pay for coffee-drinks and the 
      machine keeps track of how many times each coffee option is 
      used. These transaction aren't recorded in sql-ledger even 
      though inventory is used, but no money is received.

The inventory process is as follows
    * Inventory is received from vendors and payments are recorded in 
      sql-ledger
    * I do inventory checks monthly to keep track of use of inventory


My questions is: how do I account properly for the use of inventory?

The only way I found was to create a virtual customer and sell the used
inventory to them after which I rebalance the income account with
towards an expense account. I asked an account about this, and she said
it was a strange construction. 
Besides this, I don't seem to be able to get the numbers right for
inventory use.

What is the proper sql-ledger way of doing this?

Thanks for any help,

-Aschwin