What is Mushroom Stamp Of Approval?
1.
Generally performed by cook or some sort backline employee-type. For whatever reasons,(i.e. plate sent back, difficult diner or just don't like someone,) the cook removes his cyclops stick from his britches and strikes a portion of the meal and sends it out to be ate.
"That guy was such an ass, so I gave his mashed potatoes my mushroom stamp of approval."
See