Smoky Black Bean Tacos with Avocado Crema

Method

1. Put the sliced onion in a jar, add the lime juice or vinegar, sugar and salt, stir and set aside for at least 15 minutes while you prepare everything else.
2. Blend the avocado, lime juice, coriander, salt and enough water to make a smooth, pourable crema.
3. Heat the oil in a frying pan over medium heat, add the garlic and spices and cook for 30 seconds until fragrant.
4. Add the beans and water and cook for 5 minutes, lightly mashing about a third of the beans with a fork so the mixture holds together.
5. Season with salt and the lime juice and keep warm.
6. Warm the tortillas one at a time in a dry pan over high heat for about 30 seconds per side, or over a gas flame, then wrap in a tea towel to keep soft.
7. Fill each tortilla with beans, cabbage and pickled onions, then drizzle with avocado crema and hot sauce.