Add the guanciale/pancetta or chopped bacon to a large pan and fry for a minute or two until browned and slightly crispy. Add the chopped garlic and red pepper flakes and continue to fry for another 30 seconds to 1 minute until the garlic is just starting to turn golden.

Add the chopped tomatoes, balsamic and a good pinch of salt and pepper.

Simmer the tomato sauce until it has reduced and thickened (around 15-20 minutes). Add the drained pasta to the sauce and toss to coat. Add the grated pecorino cheese (or parmesan) and toss again until combined into the sauce. Serve.