Originally Posted by
monstertop
It actually works. The earnings still pop up as +4, +8, +10, +12, etc but when you watch your coin total go up, it goes up doubled. For me, this was easy to tell because when I was only selling +12 food, I saw my coin total go up in increments of +24 per dish. It's hard to tell but it does work for me even when I have different prices of dishes serving at once. It works on all food on my counter that is selling within that 2 hour period.
I didn't check if it works on tips as I don't care for tips.