Slice the garlic thinly.
Prepare the peperoncino.
Add olive oil to a pan and sauté the garlic and peperoncino over low heat.
Add 250ml of water and salt, then bring to a boil.
Break the spaghetti noodles in half, add them to the pan, and cook over medium heat.
When the pasta water is reduced, turn off the heat and finish with parsley and black pepper.