- Chopped chiles
- Bacon
- Pickles
- Lettuce
- Onions – caramelised or crispy fried
- Cheese
- Bell peppers
- Halloumi
- Ketchup / “special sauce” / BBQ sauce
- “hot sauce”
- Teriyaki
Not these, a line must be drawn:
- Egg
- Pineapple
- Coleslaw
- Mushrooms
- Avocado
Test these odd ideas:
- Maple syrup (with bacon)
- Peanut butter
- Goat or sheep cheese
- Curry sauce (maybe ketchup with a noticeable hint of curry)
- Ginger-Hoisin Barbecue Sauce
- Bourbon Bacon Jam
- Grilled Pineapple Salsa
- Rocket (but with something that matches)
- Honey (with goat cheese?)
- Scallions / spring onion
- Chile con queso
- The pimiento peppers themselves lend a sweet quality that melds well with sharp cheddar, making it a perfectly meltable topper for your next burger.
- Parmesan crisps