Nice game
I'm on day 12 at the moment :3
This reminds me of games like rolacoaster tycoon, where you set up the burger shops and sweet shops with prices and such to make customers happy to buy them.
Mabey as the people come past if they "Dislike" the price/ingredience a differente face will show.
EXAMPLE FACES:
To much ICE: Face goes blue and their mouth is closed tight
To much LEMON: Mouth sucks up because its soooo sour
To much SUGAR: Sparkles appear above their head - as to show a sugar rush
To EXPENSIVE: Their pockets pop inside out, to show they don't have enough money
Adding that would add lots of play value to this game :-)
Also have the randoms that walk past your stand have different coloured hats/shirts/pants. Just to make it look that bit more random.
~DK