Ingredients:

For The Patties:
1lb/500g ground beef
1 half onion grated or finely chopped
4 pinches ground coriander
4 pinches paprika powder
a little pepper, fresh ground black is better
a little salt
1 hand fresh bread crumbs
1 egg lightly beaten
1 quarter beef stock block dissolved in a quarter cup water

For the Sauce
1/2 a cup ketchup
1 tablespoon Worcestershire sauce
2 tablespoons apple cider vinegar
1 tablespoon dijon or other mustard
1 tablespoon sugar
a few drops of Tabasco or other hot sauce(optional)

For the Rolls:
4 rolls
sliced tomato
thinly sliced onion
lettuce
mayonnaise

Methods:

Firstly combine all the sauce ingredients,mix well and set aside.

Mix all the patty ingredients thoroughly,leaving the salt for after the patties are cooked if you prefer.
Make sure the mixture is cool. Divide mixture into 4 equal balls and mold into patties.

Cook on medium heat under the grill,on the barbecue or in a pan until the patty is cooked to your preferred degree of doneness or the internal temp reaches 160F/70C (when is my patty cooked?). Baste the patties with a little of the sauce about a minute or two before they are done.

Split the rolls and toast the cut surfaces lightly (under grill, on barbecue or in pan) just before the patties are done. Spread mayonnaise on the bottom half, add a thin slice of onion, some lettuce, sliced tomato and the patty. Top the patty with a little of the sauce and the other half of the roll.