6 tablespoons -
extra virgin olive oil
4 cloves -
garlic
6 tablespoons -
sun-dried tomato paste
2 tablespoons -
tomato purée (concentrated tomato paste)
½ teaspoon -
freshly-crushed black pepper
12 -
uncooked peeled prawns
1¼ lb -
crab meat chunks
2 - 3 oz -
gruyere cheese
2 oz -
butter