I played this for quite a while and still feel I didn't make much of a dent in the recipe book! Really good looking game.
You know what would be dope, is if you had to fullfill orders or something, and there's a time limit on them; so like you get the order, a couple of clues on how to make it, then you're left to work it out. It'd just add a bit of purpose and motivation. One could easily play this for ages if there was that little hook, "just one more quest" kinda thing.
Also, "Superlative Energy Drink", yes please!