Hello, cooking friends. I'm just so involved in this cooking thing?!

Hello, cooking friends. I'm just so involved in this cooking thing?

And I'm full of questions about this new venture of mine. First of all, Is there a substitute for Cinnamon? Hubby can't eat cinnamon altho' he loves it. Maybe something with a simular taste?
Second and last (for now, Tee Hee) What is a red onion? I've seen white, yellow, and purple but I have never seen a red one. Is there such a beastie? Or is the purple the same as red. If so, that's kinda dumb. Red is red and purple is a whole different ball game. Thank you in advance for being so tolerant of me and my questions.

Hi, Rd onion is the same as a purple onion, i think Cassia bark has a cinnamon taste you can add that whole and fish out after the dish is cooked