Toss pasta with pancetta bacon: When the pasta is al dente(still a little firm, not mushy), use tongs to move it to the bowl with the bacon and garlic. Let it be dripping wet. Reserve some of the pasta water. Move the pasta from the pot to the bowl quickly, as you want the pasta to be hot. It's the heat of the pasta that will heat the eggs sufficiently to create a creamy sauce. Toss everything to combine, allowing the pasta to cool just enough so that it doesn't make the eggs curdle when you mix