The Mr America Burger comes on what looks like a brioche bun but it's a little chewier so it stands up well to the juiciness of what tastes like an 80%/20% mix of beef. It is served with red onion and cheddar cheese and tomato and ketchup. The burger is very juicy which has a slight side effect of sliding out of the bun because the bun is so firm.  You have to hold it with a napkin behind it or your hand will get soaked with the fat from the burger. It tastes really good but personally I don't like to mix condiments and vegetables so I would recommend getting it without the ketchup. If you normally have condiments with your vegetables on a burger then go wild.