Serves 4
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  1. Melt the butter in a saucepan over a medium heat until it foams. Add the chopped potatoes and onions, season with salt and pepper, then stir well and cover with a butter wrapper or a piece of parchment paper. Add the pan lid and sweat over a gentle heat for 10 minutes, stirring occasionally to prevent the potatoes sticking.
  2. Add the stock, bring to the boil, and cook until the vegetables are all tender. Add the chopped herbs and milk (or milk and cream), liquidise the soup and season to taste.
  3. While the vegetables are cooking, peel the chorizo and cut into small dice. Pour the olive oil into a cool frying pan. Add the chorizo, then place the pan on a very low heat and gently cook for a few minutes, turning the chorizo every so often. Done over a very low heat like this, you’ll end up with beautifully cooked chorizo with the rich amber coloured oils rendered out. You want both the oils and the chorizo itself for drizzling over the soup when serving. Take off when it is crisp, reserving the rendered oil.
  4. Reheat the soup if necessary, then pour into warm bowls and top with a few pieces of cooked chorizo, with a drizzle of the oil from the pan over the top.

Note: Vegetable stock can be used as an alternative to chicken stock, if you wish.

Nutrition Facts

Top tip: You can use leftover mash in place of some or all of the raw potato, but instead of adding at the start, stir it in when the milk goes in and continue as above. Other leftover vegetables, such as cooked carrots, broccoli, parsnips or even spinach, can be added with the milk, keeping in mind that you may need extra stock and milk to thin it out at the end.