Set some water aside and add salt in it. Let it boil and salt in it for the spaghetti for cooking

Don't let the spaghetti cook completely.

Add pasta water to cheese to make a paste

Grind some pepper and heat it a bit on a dry pan

Add pasta water little by little to this pan with the pepper and let It reduce.

Add spaghetti to the pan. And let it cook

Once the pasta is cooked completely, turn the stove off and mix it with the cheese paste.