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Beef burgers
4
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Ingredients
500 g
beef mince
1
small onion
, finely grated and squeezed dry
1 tsp
Dijon mustard
½ tsp
salt
¼ tsp
black pepper
1 tbsp
vegetable oil
4
burger buns
, halved
4
lettuce leaves
, washed
2
tomatoes
, sliced