step 1 Put a pan of water on over a high heat to boil. Meanwhile, snip the chorizo into strips with scissors, and chop the parsley and peppers (check for stray seeds first). step 2 When the water is boiling briskly, add the spaghetti with a good measure of salt, stir and return to the boil. Cook for 3 minutes. step 3 In a large frying pan, heat the oil, add the chorizo and peppers and plenty of black pepper. Cook for a minute or so, until heated through and the juices are stained red from the paprika in the chorizo. Scoop half a mugful of pasta water from the pan, drain the remainder and tip the spaghetti into the frying pan. step 4 Add the parsley and parmesan, toss well and splash in the pasta water, to moisten. Hand round extra parmesan at the table.