This is completely false. The standard measurement bars use is called the "pour cost" which is inventory usage(in cost) divided by sales. The pour cost average

This is completely false. The standard measurement bars use is called the "pour cost" which is inventory usage(in cost) divided by sales. The pour cost average for a bar is between 18-20%. That's a gross margin of 80 to 82 cents on each dollar a customer spends on drinks. That's a pretty spectacular margin. A well-run bar on a busy night is practically printing cash.