Cook the Bacon: Start by frying the bacon pieces over medium heat until crispy, about 8-10 minutes. Remove and crumble the bacon, leaving the rendered fat in the pan for flavor.
Sauté the Onion: In the same pan, add the chopped onion to the bacon fat. Sauté until the onions are translucent, approximately 4-5 minutes.
Add the Apples: Toss in the diced Fuji apples and cook for about 10-15 minutes until they soften and become slightly caramelized.
Combine Ingredients: Mix in the brown sugar and apple cider vinegar. Let this simmer for 5-10 minutes until the mixture thickens.
Incorporate Whiskey and Bacon: Stir in the whiskey and crumbled bacon, allowing the flavors to meld together by cooking for an additional 5 minutes.
Cool and Store: Let the jam cool slightly before transferring it to airtight containers.
