1 large cooked lobster dressed (approx 1kg)

45g butter

250g king prawns, cooked

For the sauce

25g butter

25g flour

300ml milk

Salt and pepper

Splash of sherry

75g crème fraiche

15g Dijon mustard

1 finely chopped red pepper

75g gruyere cheese

1 finely chopped chilli

Chopped parsley

For the mayonnaise

175g mayo

Juice of half lemon

50g tomato ketchup

10g Tabasco

10ml Worcestershire sauce

2 anchovies, very finely chopped

1 tsp smoked paprika

For the salad

Handful of rocket and watercress

1 diced mango

3 tomatoes, skinned and diced

Half a cucumber, diced

Juice of 2 limes

Half a avocado, diced