Wash salad, tomatoes and cucumber

Place rocket salad in 2 bowls and add chopped tomatoes and cucumber

Wash and peel prawns, drain and add to bowls

Mix up the mayonnaise, tomato ketchup and tomato puree in a bowl

Cut lemon in half and juice half of it leaving other half for decoration

Add some of the juice to the mayonnaise

Spoon mixture over prawns

Butter the bread and quarter

Serve!