Finely puree the coriander with the stalks, pumpkin seeds, clove of garlic, finely puree the rapeseed oil, Parmesan, salt and pepper with a blender. Pour coriander pesto into two small glasses (250 ml) and close tightly. Pesto will keep for a few weeks in the refrigerator.

Boil the spaghetti in plenty of salted water until firm to the bite, drain and collect some pasta water. Mix the pasta with about 2 tablespoons of pesto and pasta water. Arrange the spaghetti on plates and serve sprinkled with Parmesan.