Place in a small bowl and add the lemon juice, cayenne paper, garlic and salt and pepper
3 Add a little olive oil to a small frying pan and place on a medium to high heat
4 Add the prawns and cook until the prawns have a slightly crisp outer shall, about 5-10 minutes
To make the pesto:
5 Place the basil, pine nuts and garlic in a blender
6 While blending, drizzle in the olive oil
7 Season to taste
8 Cook the spaghetti and add the pesto, top with the prawns