Yes. I collect veg and meat scraps, mistakes, spoiled food, and have the dishwasher save unfinished food from plates. A good shift will yield a 5 gallon bucket of scraps.

I just like to call it trash because it would have been thrown away

I think you could get some restaurants to work with you if you tell them you are composting it. It may save them on dumptster pickups (so much waste). They don't need to know you are using chickens or pigs to make compost. You could just set a schedule where you pick up 5 gallon buckets and give them clean buckets.  

 I had a café, but it was 90% bananas