Line a microwave-safe plate with paper towels. Arrange six of the bacon slices in a single layer; cover with paper towels. Microwave on 100 percent power (high) for 1 to 2 minutes or until partially cooked. Drain on paper towels; cool. Transfer to a large resealable plastic bag. In a small bowl stir together brown sugar, coffee, and garlic powder. Add mixture to the bag. Seal bag; shake to coat bacon. Set aside. Repeat with remaining bacon and remaining brown sugar mixture.
Season beef with salt and pepper to taste, Shape beef into six 3/4-inch-thick patties. Wrap two slices of coated bacon around the each patty; secure bacon ends together with wooden toothpicks. Cover and chill for 30 minutes or up to 24 hours.
in a medium bowl whisk together vinegar, mayonnaise, sugar, Sriracha sauce, and the 1/2 teaspoon salt. Add cabbage, carrot, onion, and parsley, stirring to coat. Season to taste with additional salt and pepper. Cover and chill until ready to serve.
For a charcoal grill, arrange medium-hot coals around a drip pan. Test for medium heat above pan. Place patties on grill rack over drip pan. Cover and grill for 16 to 18 minutes or until done (160 degrees F to 165 degrees F)* and bacon is crisp. (For a gas grill, preheat grill. Reduce heat to medium. Adjust heat for indirect cooking. Cover and grill as above.).
Place burgers on bun bottoms. Top each patty with coleslaw and Fried Pickles. Add bun tops.