Wash lars, lids and rings in hit, soapy water. Prepare pressure canner and fill with water according to canner instructions. Bring to a low simmer.
In a large pot, add all broth ingredients, mix well bring to a boil, cover, reduce heat and simmer 10 minutes.
In the meantime, prepare meatballs: Add all meatball ingredients together, mix well. Shape into 1 ½ inch meatballs.
Carefully add meatballs to simmering broth. Simmer them 10 minutes.
Evenly divide potatoes, onions and carrots among jars. Using a slotted spoon, add meatballs to jars dividing evenly. Add broth leaving 1 inch headspace, de-bubble carefully (not breaking up meatballs), wipe rims, add lids and rings fingertip tight. Put jars into simmer pressure canner.
Process quarts 90 minutes and pints 75 minutes.
