Adapted from Everyday Food
a bundle of spaghetti
1 tbsp butter
1 tsp grated lemon zest
2 tbsp lemon juice
a handful of parsley, finely chopped
red chilis, crushed
1. In a large pot, cook pasta in salted boiling water al dente. Drain, reserving some of the pasta water. Return pasta to pot.
2. Using a fork, stir in butter, lemon zest, lemon juice and parsley. Add some pasta water to adjust consistency, if needed. Sprinkle with red chilis, salt and pepper.