WASTE-NOTHING LOADED POTATO WEDGES

Use unpeeled potatoes and any cheese and milk that's almost past its best with this recipe for potato wedges - it's great for relaxing Friday nights in

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120ml vegetable oil 11/2kg Maris Piper potatoes 2 rosemary sprigs 100g chorizo, skin removed and chopped into 12cm cubes 2tbsp plain flour 2 garlic cloves, crushed 1/2 tsp chilli flakes 250ml milk 75g leftover cheese, grated (we used a mixture of gruyere and cheddar) 2 spring onions, finely sliced 10g parsley, finely chopped