Boronia is a mash of boiled eggplant and ripe plantain, folded through with hogao, the Colombian sofrito of onion, tomato and garlic. It comes from the Caribbean coast and it is sweet, smoky and soft, served hot as a side or a light main. Serves four.
Drain the eggplant and plantain properly before mashing. Both hold a lot of water after boiling, and a wet mash turns into soup rather than the thick purée this should be. The plantains need to be ripe, with dark skin: their sweetness is what balances the eggplant, and a green one leaves the dish flat and starchy. Half the hogao goes into the mash and half on top, which is deliberate and gives you two textures. Boronia is a Caribbean coast dish and is usually eaten alongside rice or fish.