For 2p, buy some thin ready made pizza dough. Put them on a baking tray on the baking paper which is included in the package. Spread a small container of arrabbiata sauce on both. Spread 2 sliced small onions, 4 sliced garlic cloves. Spread 1 can of tuna, 1 can of crab, 1 can of anchovies and 1 small can of black olives on the pizza. Finish with 250 grams of mozzarella slices and 1 table spoon of dried oregano. Bake in the oven at 200° for 20-25 mins. Serve with a rocket salad.