You can add ONLY 4 items?

[RicFlair312]

I want cheese, grilled onions, mustard and scrambled egg.

Updates:

[TheUniqueOne96]

Chilli sauce, lettuce, onion and a cheese slice.

I may as well turn it into a cheese burger and this may sound weird, but I don't like burgers as much if it doesn't have lettuce in there, it just tastes dry.

[AviatorTom]

Here's what I would add:
1. Slice of Swiss cheese
2. Strip of bacon
3. Lettuce
4. Mayonnaise

[Snsl153]

Cheese, lettuce, gherkins, tomato sauce.
Damn, now you've made me hungry! :(

[FreyaRed]

Real Cheddar cheese, thin slices salt pickled cucumber, mustard, ketchup

[BlueStripedSoul]

Simple: Tomato, onion, pickles and mustard. 🙂 For a classic burger, that's how I always eat it.

[ChrisMaster69]

Proper cheese
bacon
chilli ketchup
another burger

[MCheetah]

1) American cheese (melted, if possible)
2) Fried onions
3) Crispy bacon
4) Heinz Ketchup

[SlothySlob]

Cabbage, sweet onions, fried egg, 70-30 mayo - pesto.

[Anonymous]

Cheese, pickles, ketchup, mustard/mayo combo (it counts as 1 because they do make that combined condiment)

[purplepoppy]

Bacon (obviously)
Blue cheese
Battered onion rings

[Blackcosmo]

1. Cheese
2. Lettuce
3. Onion rings
4. Chips or fries

[LiamSawyer]

Sharp Cheddar cheese, mustard, diced red onion, dill pickles.

[BrookeAZ90]

Cheese, bacon and mayo is all I need

[SiberFox]

Onions, pickle, dijon and hot sauce

[JustinTheGreat]

Ketchup, lettuce, tomato, extra pickles

[Wubs3000]

Tomato, bacon, avocado, mayo/lettuce

[call_me_scar]

Cheese, bacon, ketchup, another burger

[Slartybartfast]

Bacon bacon bacon and bacon.

[gorydetails]

cheese, onions, pickles, Big Mac sauce.

[exitseven]

Bacon and lettuce and another burger.

[shortster]

Pickles, onions, and ketchup.

[barn_stormer]

ketchup
mustard
relish
tomato

[Shamalien]

Ronions, dijon, mayo and mushrooms

[BCRanger10]

Bacon, lettuce, tomato, and cheese.