So far I'm enjoying the game but am also having a lot of problems. Nothing actually happens when I add an ingredient to the cauldron and I'm having trouble combining things (like meatballs and sauce) or adding more than one thing (other than kebabs) to the plate unless that just isn't possible. I think it would be great to have a guide that shows where you can use ingredients and have a way to re-view the customers order.
I was having trouble with this too. If It's with your browser or something, I can't help much, but I did notice that the only things I can put in the cauldron are noodles and the ingredients for vegetable soup.
As for the plate, it's very order-dependent. You have to put the noodles on first, then meatballs, then, sauce. If you put the sauce on first, you aren't able to put on the meatballs.
I do agree with you though, being able to review the customer's order would be nice.