Grandma Kim's Alfredo Sauce

1 quart of 1/2 & 1/2, (sometimes I add some heavy cream)
1 stick of butter
3 cloves crushed garlic,
salt and pepper to taste
1 cup of grated Parmesan
1 pound of your favorite pasta

Simmer until it all comes together. Add sautéed shrimp or chicken , but not necessary.