Mixing two substances and noticing that the outcome has properties that neither of them had alone, is something that probably man has been doing since the dawn of time. Then when fire was invented things became even more interesting. Over the course of history this peculiar art went by many names as the magical element gradually gave way to an increasingly scientific approach, becoming first alchemy and then chemistry. If what you’re looking for relates in any way to that, here you’ll find it. Unless it’s closer to the alchemy practiced daily in the kitchen, in which case you’ll better look it up under “Food”.