a slang term for what makes something cool. The key ingredient in something or someone's success. The essential part.
Fett: who those photos are pretty niii, You must be drinkin that turcsauce.
Liam: damn dude, You're games gotten so much better, those new shoes are pretty turcsauce.
Jeffy: I can't wait to get my new car, I'm gonna be so much cooler, I can taste the turcsauce already.