Master Blueberry Jam
- 1⁄4 cup pectin
- 3 cups granulated cane sugar
- 9 cups frozen blueberries
- 1 1⁄2 cups water
- 144 oz 80⁄20 blend ground beef, formed into 3 oz balls
- 6 tbsp Mortons kosher salt
- 6 tbsp ground black pepper
- 48 slices white American cheese
- 24 King's Hawaiian buns, sliced with hinge attached
- 3⁄4 cup unsalted butter, melted
- 1 cup creamy peanut butter
- 1 1⁄2 cups sliced yellow onion, caramelized
- 3 cups blueberry jam
- 24 slices fully cooked bacon
Master Blueberry Jam
- In a small bowl, mix pectin with 1 cup of sugar, set aside.
- In a large pot, add frozen blueberries and water. Cook blueberries on medium-high heat until boiling, stirring occasionally to prevent scorching.
- Add remaining cane sugar into pot. Stir to dissolve sugar, and bring pot back to boil.
- Stir pectin sugar mixture into pot and boil for exactly 1 minute. Boiling for longer than a minute will cause the jam to not set properly when cooled.
- Remove blueberry jam from heat and transfer to an airtight container. Let cool to below 40°F, and store chilled until service.
- Heat flattop grill to medium-high heat.
- In a small mixing bowl, combine kosher salt and ground black pepper. Lightly season one side of each 3 ounce ground beef ball with salt and pepper mix.
- Place the seasoned side of each ground beef ball on the flattop grill.
- Lightly season the other side of each ground beef ball with salt and pepper mix. Cook on flattop grill for 1 minute.
- Press each ground beef ball into a 4-inch thick diameter patty using a metal spatula. Cook for an additional 1 minute.
- Turnover each burger patty and cook for 1 minute.
- Place 1 slice of cheese on each burger patty. After 30 seconds, remove the burger patty with melted cheese from flattop grill.
- Stack two burger patties with cheese on top of one another using a metal spatula.
- While burgers are cooking, brush each side of the opened bun with its hinge attached, on the cut side, with melted butter.
- Place the bun, butter-side down, on the flattop grill. Toast bun for 1-2 minutes, until bun is toasted and golden.
- Remove bun from the flattop grill with a metal spatula and place on a cutting board with the toasted side facing up.
- Build each burger in the following order:
- 1 toasted bun heel
- 2 teaspoons peanut butter spread coast to coast on heel
- 1 tbsp caramelized onions
- 2 cooked burger patties with cheese on each patty
- 2 tbsp blueberry jam
- 1 slice bacon, cut in half
- 1 toasted bun crown
- Insert a sandwich pick into the center of the burger to hold its shape or wrap burger in brown sandwich paper.
- Place burger on proper tray or plate. Serve immediately while hot.