Tracklements have created a formula for the most ooey gooey juicy burger using their sticky sweet Caramelised Onion Marmalade. Add your heritage beef burgers to the barbecue or grill. Around 3 minutes before it has finished cooking, add a slice of cheddar cheese on top so it becomes melted and gooey. Cut the brioche bun in half and add to the barbecue or grill for 1-2 minutes until lightly toasted. Once cooked, add the patty with melted cheese to the brioche bun, and spoon on a rather healthy portion of Tracklements Caramelised Onion Marmalade. Add in sliced red onions, gherkins, sliced tomatoes and lettuce. Best served at a summer barbecue with a side of potato wedges.