Atun con Tomate

Ingredients

• 1kg fresh tuna loin, cut into 4 pieces
• Olive oil and salt flakes
• For the tomato sauce:
• 4 tbsp of olive oil
• 1 large onion, peeled and finely chopped
• 1 garlic clove, peeled and finely chopped
• 1 green pepper, core and seeds removed and finely sliced
• 1 large red pepper, cut in half lengthways, core and seeds removed
• 100ml txakoli or dry white wine
• 1kg ripe plum tomatoes, roughly chopped
• Pinch of caster sugar
• Salt to taste
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