Our gardens are starting to produce fairly well so I have been doing a lot of canning and dehydrating of vegetables, which has also produces a lot veggie scraps. By the end of this weekend I had enough to fill a large crockpot and make a batch of vegitable broth this afternoon.
I find that making my own vegitable broth saves us a fair amount of money and taste better than any brand I have found in the market. To make your own broth fill a slow cooker with vegitable scraps. For this batch I used onion, mushroom stems, celery, tomatoes, beets, kale stems, broccoli, cabbage, carrot tops, and green bean tips (keep in mind that you can always store scraps in the freezer until you have enough to make a batch of broth). Cover the scraps with water until it is about an inch above the scraps, add salt, pepper and herbs to the pot and cook on low for about 10-12 hours.
Run the cooked scrap mixture through press to render as much liquid as possible and then pour through a fine mesh seive to remove the larger vegitable particles that made it through the press.
Place the pressed scraps in to your compost container.
Pour the the warm broth into prepared canning jars and pressure cook for 75 minutes at the pressure recommended for pressure in your area.