I like the idea of squashing ingredients you don't need and that giving you boosts. I think it would be a good idea to add icons to the list of ingredients you still need to make it easier to see and understand at a glace. Maybe squashing a good ingredient you already have enough of should also give a boost?
I also love the low poly art style, but feel like the marble texture doesn't work very well with it and the zoomed out perspective doesn't really show off your great models.