Bring a pot of water to a boil, add 1/2 tsp of salt, and cook the spaghetti until it is al dente. Reserve 1 cup of the pasta cooking water, then drain the spaghetti.
2
In a pan, heat 3 tablespoons of extra virgin olive oil over medium heat to warm it up.
3
Add the minced garlic to the pan and sauté gently for 3 minutes until it is lightly golden.
4
Stir in the chilli flakes to the pan and cook for an additional minute.
5
Add the chopped cavolo nero, lemon juice, and 1/2 cup of the reserved pasta water to the pan. Continue to cook for around 3-4 minutes until the cavolo nero wilts.
6
Combine the cooked spaghetti with the sauce in the pan, adding more of the reserved pasta water if the spaghetti looks dry.
7
Remove the pan from the heat and mix in half of the finely chopped parsley, the remaining 1/2 tsp of salt and the ground black pepper. Adjust seasonings to taste.
8
Just before serving, drizzle the spaghetti with the remaining 1 tablespoon of extra virgin olive oil, sprinkle it with the grated vegan parmesan, and garnish with the remaining chopped parsley.