To do the catering ledger (materials, inventory goods, etc.), you need to do the debit side of the ledger according to the purchased materials, inventory goods to register the increase in the quantity, unit price, amount information, and then according to the receipt of the credit side of the ledger to register the quantity, unit price, amount information, and at the same time, carry over the balance of the columns of the number of the quantity, unit price, amount information.