Accounting method of hotel drinks cost

The cost of drinks is the price of buying drinks.

In my opinion, it can be accounted according to the classification of various wines, and the sales cost can also be carried forward according to various wines, but it is too labor-intensive. Can also be classified, not too detailed, such as by grade, or by wine variety. Or directly put all the wines together for mixed accounting, carry them forward uniformly when carrying forward the cost, and calculate the average unit price by weighted average method.