Okay, so initially it was a bit obtuse... I think I got the mechanics closer to the end of them? The hints table with question marks was throwing a bit of a curve ball to me, and the time pressure was stressful :D
I can see this going on for much longer with expanded gamut of ingredients and removed/reduced time pressure (maybe only some customers are on a tight time limit?); one time I got stuck in a bit of panic waiting for ingredients I have wasted to respawn - thankfully the customer didn't leave in that time and I was able to fulfil their request :)
Well done!