Fish stew with harissa Serves: 4 Ingredients 3 cloves garlic, chopped 2cm piece fresh ginger, peeled and chopped large pinch salt 2 tbsp olive oil knob of butter 2 onions, finely chopped 1 red pepper, sliced 1 tsp honey 2 tsp ground turmeric 2 tsp harissa 1 preserved lemon, chopped 400g tin chopped tomatoes 750ml fish