Seared tuna steak with linguine and puttanesca sauce
By Matt Tebbutt From Saturday Kitchen Ingredients For the puttanesca sauce 3 tbsp olive oil 1 onion, chopped 3 garlic cloves, minced 6 anchovy fillets 1 red chilli, finely chopped 400g tin chopped tomatoes ½ tsp dried chilli flakes 2 tbsp small capers 150g/5½oz …