2 large aubergines, pricked all over with a fork
2 limes, juice only
1 large onion, thinly sliced
1 red onion, thinly sliced
1 x 400g/14oz tin black beans, drained
1–3 heaped tbsp jerk seasoning paste (to taste)
salt and ground black pepper
1 tbsp olive oil
large pinch sea salt
guacamole
corn or wheat flour tortillas