Homemade Vegetable Stock: Bulk Pressure Canning Recipe

I hate buying vegetable broth or stock. I find most store-bought versions contain bell peppers which, to me, overpowers the taste of my recipes. I end up with bell pepper-flavored soups, etc. and I can't stand it! Not to mention they're often loaded with unnecessary ingredients or preservatives. And cost more than they should. Making my own vegetable broth is super easy and I use onion, carrot, and celery straight from my garden as the trinity of flavors. This trinity is referred to as "Mirepoix" in French cooking; the aromatic blend created when combining these three vegetables.

I prefer to make bulk batches of beans and vegetable stock all at once. With the equipment and ingredients already at hand, I figure it's wise to just make it all in the same session rather than bit by bit. This is a bulk recipe for large stock pots. You can use multiple pots to accommodate the recipe or cut in half if needed. The skin of the onion and garlic are left on as they contain many minerals and nutrients beneficial to human health. They also serve as a coloring agent. 

INGREDIENTS
10 gallon stock pot filled 3/4 of the way full with water (roughly 7.5 gallons)
2 onions, quartered, skin on (may also use 2 cups chopped shallots or leeks)
1 bunch celery leaves, coarsely chopped
4-5 carrots, washed and halved
6 cloves of garlic, pressed, paper on
salt and pepper

DIRECTIONS
Combine the water and remaining ingredients into the stock pot. Season with salt and pepper generously. Bring to a boil and then reduce to a simmer. Allow to simmer for 30 minutes. While cooking, and once the vegetables are softened, occasionally mash the contents of the pot with a potato masher. This releases more flavor from the vegetables into the stock.

While broth is simmering, sterilize and warm pint-sized canning jars. This recipe yields roughly 25 pints of stock. This may be a good time to prep your pressure canner according to canner directions.

Once the stock has finished simmering, remove from heat and ladle spoonfuls of stock through a mesh sieve or strainer into the canning jars. Leave 1/2" of headspace in each jar. Wipe the rim of every jar before adding new lids and bands. The bands should be finger tight. 

Place the jars of stock into the pressure canner. The processing time is 20 minutes at 10 pounds of pressure. Adjust to accommodate your altitude according to canner instructions. Because my canner only fits 16 pints at a time, I pressure canned my 25 jars in separate batches.

Once the pressure canning process is completed, jars should be allowed to cool and set on a towel-lined countertop for 24 hours. Ensure all jars are well sealed before storing in a cool, dry location. This stock should be consumed within one year.


Yields: Roughly 25 pints of stock
This is a pressure canning recipe, not to be substituted with water canning or processing.