Smashed burgers with jalapeño rarebit

Method

• step 1

  To make the rarebit mixture, melt the butter in a pan and stir in the flour. Cook over a low heat for 4-5 minutes until the mixture is light-straw coloured.

• step 2

  Gradually add the lager until you have a smooth sauce. Stir in the mustard then add the cheddar and stir until melted.

• step 3

  Stir in the jalapeños. Pour into a clingfilm- or baking paper-lined 18cm x 18cm tin, spread out evenly and put in the fridge. When completely set and cold, cut into 4 squares.

• step 4

  To make the burgers, put the mince, onion and garlic salt in a bowl. Season with pepper and mix well then divide into four balls. Use a spatula to smash each into a rough patty.

• step 5

  Heat a large, heavy frying pan to hot. Oil one side of the patties then put them into the pan, oiled-side down. Cook for 2 minutes, on each side, squashing them flat as you go.

• step 6

  Put a rarebit slice on each and grill on high for 2-3 minutes until bubbling.

• step 7

  Spread mayo on each burger bun base then add lettuce and onion. Sit a burger on top then add the pickles and bun top.