Combine water and all ingredients in large pot or slow cooker
Simmer for 2-3 hours
Strain out veggies, and store in the fridge or freezer
This recipe is super flexible. I try to use fresh vegetable scraps from whatever was cooked recently--broccoli stems, the ends of carrots or onions, greens from carrots or other veggies. Some other suggestions for added veggies include: parsnips, tomatoes, leeks, mushrooms, celeriac, broccoli, peppers, turnips, and fennel. Add chicken or beef bones if desired.