I'm not sure if this would be better posted here or in one of the food forums, but it feels like a frugality issue first so I'll start with this. I'm really trying to reduce food waste. Some of it is a matter of being more mindful with what's in the fridge and cupboards, but I'm also catching myself throwing out parts of things that I suspect could be used if I was a little smarter. I've started making stock from vegetable ends, but that's a pretty obvious one. What about parmesan cheese rinds? Or broccoli stems? Any tips for these two? Are there any other things you used to toss but now make better use of?