For the pasta
01 -
12 oz (340 g) spaghetti or linguine
02 -
1 tablespoon kosher salt, for the pasta water
03 -
1 cup (240 ml) reserved hot pasta water
For the garlic Parmesan sauce
04 -
5 tablespoons (70 g) unsalted butter
05 -
5 garlic cloves, finely minced
06 -
3 oz (85 g) Parmesan cheese, finely grated, about 1 1/4 cups
07 -
1/2 teaspoon freshly ground black pepper, plus more to taste
08 -
1/4 teaspoon red pepper flakes, optional
09 -
2 tablespoons chopped fresh parsley
10 -
1 teaspoon lemon zest, optional
11 -
Salt, to taste