How to use your vegetables' leftovers in a smart and useful way, by SavoryLotus :

https://www.savorylotus.com/how-to-make-vegetable-broth/

Cook Time: 1 hour - Prep Time: 5 mins - Author: Katja from Savory Lotus

I like this recipe because you can use whatever leftover you have and also parts that one would normally discard.

Ingredients: 

• carrot peels and small ends
• sweet potato peels and small ends
• celery ends and leaves
• onion and shallot skins
• green onion or leek ends
• mushroom stems
• small amounts of broccoli stems or kale stems
• slightly wilted greens from fridge
• any other fun vegetable scrapes I may have