Heat BBQ to 350°F or as close as possible
Chop bacon and add to a heavy bottomed pot
Cook on BBQ until browned
Remove bacon and set aside
Leave about 3 Tbsp of the bacon fat in the pot, and do not scrape the bottom of the pot.
Add chopped onions, minced garlic and 1 can of beer to the pot and cook until onions are softened and translucent , stirring and scraping the bottom of the pan to release any small bits of bacon on the bottom.
Add brown sugar, apple cider vinegar, spices and continue cooking until the onions are caramelized.
Add the bacon back to the pot with the second can of beer and enough broth to just cover the bacon
Simmer on low heat (about 250°F), stirring often, adding broth when needed. There should always be some liquid in the pot to avoid burning
Continue simmering until the mixture forms a jam like consistency
Store bacon jam in mason jars in the fridge