I think this game has a ton of potential. It's quite obvious that you didn't have a lot of time, but I think you still got an impressive amount of stuff done. I think it would be really cool to have a timer on the customers which tells you how many turns you have to fulfill their order before they will leave. Maybe you could have multiple orders you could potentially serve as well, so you can choose what to prioritize. Maybe you could also upgrade your shop with more ingredients and/or more appliances.
All things considered this is a great prototype and I see a ton of potential in it. Top grades for use of Limitation and Concept from me.