If using a stick blender, put the anchovies into a bowl with the garlic and lemon juice and blitz to a paste. Still blitzing ... on in this vein until both are used up. Decant into individual ...
Cook gently until the anchovies have melted into a paste. Add the chilli flakes and mix well. Reduce the heat to low until the pasta is ready. When the pasta is two minutes away from being ready ...