Готовим американский бургер!

Ingredients: makes 2 2 Sesame seed bun 1 onion finely chopped 1/2 cup mayonaise 2 TBLS pickle relish 2 slices pickle 1 slice of cheese 200 grams beef mince 1 cup chopped lettuce 1 teaspoon sugar 1/2 teaspoon white vinegar salt and pepper