2 tb Olive oil

2 Onions, finely chopped

2 Garlic cloves, crushed

1 cn Tomatoes in juice (8 oz)

1 cn Green chilies (3.5 oz)

1 tb Chili relish

half ts Cumin seeds

1 lb Lean ground beef

Salt to taste Fresh ground pepper to taste 2 tb Corn oil

4 sl Gruyere cheese

Shredded lettuce 4 Buns, split, warmed

Onion slices

Heat olive oil in a saucepan. Add chopped onion and garlic and fry gently 5 minutes. Process tomatoes in a blender or food processor to a puree. Drain and chop chilies. Add tomatoes, chilies, chili relish and cumin to onion mixture. Stir well, then cover and simmer 10 minutes, stirring occasionally.

Meanwhile, put ground beef into a bowl. Add remaining onion, salt and pepper; mix well. Divide into 4 equal balls and shape each in 1 4- 1 cm round burger. Heat corn oil in a large skillet. Add burgers and 5-6 minutes on each side. Top each with a slice of cheese. Arrange lettuce on 4 bun halves. Place burger on lettuce and top with chili sauce, onion and remaining bun halves. Serve hot in napkins.