01 - Bring a large pot of salted water to a boil. Cook the pasta according to package directions until al dente. Reserve ½ cup pasta water, then drain.
02 - While pasta cooks, melt butter in a large skillet over medium heat. Add minced garlic and sauté for 1–2 minutes until fragrant but not browned.
03 - Pour in the heavy cream and milk. Stir and bring to a gentle simmer. Cook for 3–4 minutes, stirring occasionally.
04 - Lower the heat and add Parmesan cheese. Stir until melted and the sauce is smooth. Season with salt, pepper, and nutmeg if using.
05 - Add the drained pasta to the skillet, tossing to coat evenly. If the sauce is too thick, add reserved pasta water little by little until desired consistency is reached.
06 - Stir in chopped parsley, basil, and chives. Remove from heat.
07 - Serve immediately, garnishing with extra fresh herbs and additional Parmesan if desired.