Reddit comment:

The reason he's so mortally offended is because:

1. Italians take their carbonara very seriously.
2. The dish he prepared is penne, nutmeg, a few cheeses, and peas, baked in an oven.
3. Carbonara is spaghetti, eggs, black pepper, guanciale or pancetta, and Pecorino-Romano or Parmigiano-Reggiano. It's cooked by using the heat of the pasta to gently cook the eggs.

So, somehow, she is suggesting that adding ham (a different kind of pork from guanciale and pancetta), somehow the penne would turn into spaghetti, the cheeses would age themselves, the cream would magically become eggs and the nutmeg would transmogrify into black pepper. Who knows what the fuck the peas would do.

The recipe he cooked has literally zero ingredients in common with carbonara and an entirely different preparation.

1000 Reddit comments:

http://reddit.com/r/videos/comments/2rgbrc/one_of_the_funniest_moments_form_a_british/