Preheat your oven to 180℃. Drain and rinse the black beans in a colander. Pop a third of the beans in a bowl and mash with a fork until broken up. Peel and grate the garlic (or use a garlic press). Zest and halve the lime. Chop the halloumi into 2cm chunks.

Heat a drizzle of oil in a medium saucepan over medium-high heat. Add the garlic and tomato purée, stir and cook for 1 minute. Pour in the water (see ingredients for amount) and add the whole and crushed beans. Mix together and cook for 3-4 mins.

Add half the chipotle paste to the beans. Mix well and season to taste with salt and pepper. Allow to simmer until thickened, 2-3 mins.

Heat a drizzle of oil in a large frying pan on medium-high heat. Add the halloumi and fry until golden, 6-7 mins. Turn every 2 mins. Meanwhile, mix the remaining chipotle paste and half the mayo in a small bowl.

Pop the tacos (3 per person) directly onto the top shelf of the oven until heated through, 1-2 mins. Mix the remaining mayo with the lime zest. Trim the root from the baby gem lettuce then half lengthways. Thinly slice widthways.

Lay the tacos on a board or plate. Spread the chipotle mayo on the base of the tacos. Add a handful of lettuce to the base and squeeze over the lime juice. Add a couple of spoonfuls of the chipotle bean mix to each taco. Top with equal amounts of halloumi cubes, drizzle over the limey mayo. Serve 3 per person with any extra lime wedges for squeezing over. Dig in!