Preparation time: 15 minutes Servings: 6 Cook time: 35 minutes Total Time: 50 minutes Difficulty: Easy Ingredients: 3x 400g / 14 oz chopped tomatoes in a tin2 medium-size onion3 tablespoons veg oil (or lard)2 – 3 tablespoons plain flour1.1 liter / 2 pints boiling water1 …