At current price in many locations this would add around $40 per menu item. Say you've got a weekly menu of 40 items, 5 sauces, 10 specials and 5 extras, that's $2,400. Every week they would also have to pay an extra $400.  Unless the government was going to offer a subsidy on testing for small cafe and restaurant businesses, it would be prohibitively expensive and stop regular menu changes. I quite like the proposal for beetus troughs though.