Ranked by protein per calorie.
- Cheese (1 slice) — 70 cal, 4g protein
- BBQ Sauce — 49 cal, g protein
- Green Peppers — 3 cal, 0g protein
- Grilled Mushrooms — 6 cal, 0g protein
- Hot Sauce — 0 cal, 0g protein
- HP Sauce — 21 cal, g protein
- Jalapeño Peppers — 3 cal, 0g protein
- Ketchup — 30 cal, 0g protein
- Lettuce — 3 cal, 0g protein
- Mayonnaise — 111 cal, 0g protein
- Mustard — 0 cal, 0g protein
- Onions / Grilled Onions — 11 cal, 0g protein
- Pickles — 4 cal, 0g protein
- Relish — 16 cal, 0g protein
- Tomatoes — 8 cal, g protein