Easy Enchilada Sauce

Ingredients

• 1 x 400g tinned tomatoes (or 450g fresh tomatoes, cut in half)
• 1 onion, peeled and cut in quarters
• 2 cloves garlic, peeled
• 1 whole dried Ancho chilli
• 1 whole dried Chipotle chilli
• 3 tablespoons olive oil
• 3 tablespoons red wine vinegar
• 3 tablespoons plain flour
• 1 tablespoon Chipotle chilli powder (or hot smoked paprika)
• 2 teaspoons Oregano (Mexican if you can get it)
• 2 teaspoons ground cumin
• 1 teaspoon ground coriander
• 1 teaspoon sea salt
• 300mls vegetable stock