Put on your kettle to boil. Very finely mince 2cm of the chorizo and add it to a bowl with the onion and garlic.
Cut the remaining chorizo into 5mm slices and add to a dry saucepan. Fry over a medium heat for 2-3 minutes until the chorizo has released its oils and is almost golden in colour, then transfer to a plate and set aside. Fry the onion, garlic and minc