1Start with water, vinegar, red chilli flakes, dried coriander seeds, sugar and salt in a pan. Bring it to a boil and let it cool. Add cucumbers to the mixture and keep aside.
2Place patty on a very hot pan with butter and let it cook. Add salt and pepper to taste.
3Flip the patty once. Add cheese slices.
4If you like your vegetables crunchy, skip this step. Otherwise, add sliced onions and tomatoes to the pan for a few minutes.
5Toast buns in the same pan.
6Assemble the burger: bun, ketchup and mustard, lettuce, patty, pickled cucumbers, tomato, onion, and top bun.