Tomato sauce Ingredients 3 tbsp olive oil 2 banana shallots, finely chopped 2 cloves garlic, grated or crushed 2 tsp ground cumin 1 tsp ground coriander 130 ml dry white wine 2 x 400 g tins of plum tomatoes 1 tbsp rose harissa (1 ½ tbsp for a spicier version) 2 tsp caster sugar 1…