Carefully wash the clams, rinsing them under running water multiple times to clean off all dirt. Heat half the olive oil on a large pan over medium heat. When the pan is hot, add the clams. Stir, then cover and cook for 5 minutes or until the clams open. Remove the pan from the heat, and once the clams have cooled down, remove them from their shells. Reserve the cooking water and filter it through a fine sieve or cheesecloth.
COOK THE SAUCE
Peel and roughly chop the tomatoes and set aside. Add the remaining oil into another pan and heat over medium heat. When the oil is hot, add the garlic and let it brown, before adding the chilli and tomatoes. Add the clam cooking water and cook for about 10 minutes. Remove the garlic, season with salt and remove from the heat.
COOK THE PASTA
Meanwhile, cook the Spaghetti in a large pot of salted, boiling water according to the instructions on the pack.
COMBINE AND SERVE
Once the pasta is cooked al dente, drain and toss with the sauce and add the clams. Garnish with parsley and serve.
