I'm a cook, and I've been at it professionally for 16 years now; nothing to sneeze at.
I do this "Grill-a-Chef" thing where anyone can ask me anything about food and I will try to get them the answer. The goal being that it will enable more people to cook.
But there are other resources out there like me. One in particular stands out: Harold Mcgee, an expert on food science and author of "On food and cooking" the ultimate food science reference. If you're a food geek, he's an A-lister, and he puts himself out there to answer people's food science questions. Anyone can email him at firstname.lastname@example.org
He'll just get back to you with an answer. Simple as that.
Amazing, isn't it.
Check out the website.