Purge Clams: Start by purging your clams to remove any sand. Soak them in cold water with 1 tablespoon of salt per quart of water. Place a turned-over plate at the bottom of the bowl to catch the sand. After 2 hours in the fridge, check for sand and repeat if necessary.
2.2 pounds of clams, Salt
Prepare the Base: Finely chop the garlic, half of the red onion, and some parsley. Heat olive oil in a large skillet and sauté these ingredients until the garlic turns golden. Be careful not to burn the garlic.
1 clove of garlic, 1 red onion, Parsley, 7 tablespoons olive oil
Add Clams and Chili: Add the clams and a whole chili pepper to the skillet. Pour in a bit of water to prevent burning, cover, and cook on high heat, shaking the skillet occasionally. The clams should open within a few minutes.
1 small chili pepper
Mix in Tomato Sauce: Once the clams have opened, reduce the heat and add the tomato sauce and a pinch of salt and pepper. Let it cook for about 5 minutes until everything is heated through.
1/2 cup tomato sauce
Serve and Enjoy: Serve your Livorno-Style Clams hot, ideally with Tuscan bread and a glass of white wine.