Food Network teaches how to crush, slice and mince garlic. Peel off some of the papery skin from the garlic and then smash the head of garlic with the heel of your hand to loosen the cloves; if you only need a few cloves, leave the head intact and pull some off. Separate the cloves. To peel a clove, cut away the root end with your knife. Lay the flat side of the knife over the clove while holding the knife handle, then with the heel of your free hand carefully whack the knife against the garlic to separate the skin from the clove. To crush the peeled garlic, lay the flat side of the knife over the clove and smash it again. To slice peeled garlic, lay the clove flat on the cutting board and hold it with the fingertips of one hand, keeping them curled under. Using a rocking motion with the knife, make thin slices by moving the knife slowly across the clove. To mince peeled garlic, lay the flat side of a knife over the clove and smash it. Roughly chop the clove then move your free hand flat across the tip of the knife and use a rocking motion to chop the garlic until it’s finely minced.
Prepare the sauce while the pasta is cooking to ensure that the spaghetti will be hot and ready when the sauce is finished; it is very important that the pasta is hot when adding the egg mixture, so that the heat of the pasta cooks the raw eggs in the sauce.
Bring a large pot of salted water to a boil, add the pasta and cook for 8 to 10 minutes or until tender yet firm (as they say in Italian "al dente.") Drain the pasta well, reserving 1/2 cup of the starchy cooking water to use in the sauce if you wish.
Meanwhile, heat the olive oil in a deep skillet over medium flame. Add the pancetta and saute for about 3 minutes, until the bacon is crisp and the fat is rendered. Toss the garlic into the fat and saute for less than 1 minute to soften.
Add the hot, drained spaghetti to the pan and toss for 2 minutes to coat the strands in the bacon fat. Beat the eggs and Parmesan together in a mixing bowl, stirring well to prevent lumps. Remove the pan from the heat and pour the egg/cheese mixture into the pasta, whisking quickly until the eggs thicken, but do not scramble (this is done off the heat to ensure this does not happen.) Thin out the sauce with a bit of the reserved pasta water, until it reaches desired consistency. Season the carbonara with several turns of freshly ground black pepper and taste for salt. Mound the spaghetti carbonara into warm serving bowls and garnish with chopped parsley. Pass more cheese around the table.