Serves 4 to 6 Prep 10 min Cook 25 min Total 35 min Type Side Origin Cuban

Boniato Mash

Boniato is the Caribbean white-fleshed sweet potato, drier and less sugary than the orange American kind, with a soft chestnut sweetness when cooked. Mashed with butter, garlic, sour orange and a splash of olive oil, it's the Cuban answer to mashed potato: rich, gently sweet, fragrant with citrus.

Serves 4 Prep 10 minutes Cook 25 minutes Units Rate

Overview

Boniato is peeled, cubed and simmered in salted water until completely tender. Once drained, the boniato is returned to the warm pot to steam-dry, then mashed with butter, warmed garlic-infused olive oil, sour orange juice (or a lime-and-orange substitute), salt and pepper. The texture should be soft and spoonable, not stiff. Sour orange is the signature; without it the mash tastes flat.

Ingredients

1 kg boniato (Caribbean white sweet potato)
1 teaspoon salt (for the cooking water)
60 g unsalted butter
3 tablespoons olive oil
4 garlic cloves (finely sliced)
3 tablespoons sour orange juice (naranja agria, or 2 tablespoons fresh orange juice + 1 tablespoon lime juice)
½ teaspoon ground cumin
salt
pepper
1 tablespoon fresh coriander (or flat-leaf parsley, chopped, to finish)

Method

Stage 1 - Cook the boniato

Peel the boniato (the dark pinkish-brown skin comes off easily with a vegetable peeler) and cut into 4 cm cubes.
Place in a large pot; cover with cold water by 3 cm. Add the salt.
Bring to the boil; reduce to a steady simmer.
Cook 18-22 minutes until completely tender when pierced with a knife. The pieces should yield with almost no resistance.

Stage 2 - Garlic oil

While the boniato cooks, gently warm the olive oil in a small pan over low heat.
Add the sliced garlic; cook 3-4 minutes until pale gold and fragrant. Don't brown: bitter garlic ruins the mash.
Take off the heat; let the garlic continue to infuse the oil.

Stage 3 - Mash

Drain the boniato thoroughly. Return to the empty hot pot; place over low heat for 1 minute to steam off excess moisture, shaking the pot.
Add the butter; mash with a potato masher or pass through a ricer for the smoothest result.
Stir in the garlic oil (garlic and all), the sour orange juice and the cumin.
Season generously with salt and pepper. The mash absorbs salt readily; taste twice.
If it's stiff, beat in a splash of warm milk or the boniato cooking water until soft and spoonable.

Stage 4 - Serve

Pile into a warm dish; drizzle with a little extra olive oil.
Scatter with coriander or parsley.
Serve immediately.

Notes

Boniato vs sweet potato: Boniato (sold in Latin and Caribbean shops) has white-cream flesh, drier and less sugary than the orange American sweet potato. If unavailable: a 70/30 mix of floury potato and orange sweet potato approximates the flavour and texture. Pure orange sweet potato alone gives a sweeter, wetter mash.
Sour orange (naranja agria): The defining citrus of Cuban cooking, available bottled in Latin shops as "naranja agria". Substitute is 2 parts orange juice to 1 part lime juice; add a teaspoon of grapefruit juice if you have it.
Don't burn the garlic: Gold and fragrant is the goal. Brown garlic turns bitter and overwhelms the mash.
Mash, don't whip: Boniato can go gluey if whipped in a food processor. Stick to a masher or ricer.

Variations

With pork drippings: Replace half the butter with rendered pork fat from a mojo pork roast. Traditional, decadent. Spicy: Mash in a finely chopped seeded scotch bonnet, or ½ teaspoon dried red chilli flakes with the garlic. Cilantro-heavy: Fold in 3 tablespoons of finely chopped coriander at the end for a green-flecked version.

Serving

Serve with: Mojo pork (lechon), ropa vieja, grilled chicken thighs, fried fish. Pairs especially well with anything roast and citrus-marinated. Garnish with: Fresh coriander, a lime wedge, a final drizzle of olive oil.

Storage

Keeps 3 days refrigerated.
Reheat gently with a splash of milk or stock; the mash dries out in the fridge.
Freezes 2 months; the texture is slightly looser after thawing.

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Mojo, pronounced moh-ho, is the foundational citrus and garlic marinade of Cuban cooking, and lechon asado al mojo, a whole pig or shoulder marinated in it and roasted slowly, is the centrepiece of Christmas Eve dinners across Cuba and the Cuban diaspora in Miami, Tampa and beyond. The defining ingredient is naranja agria, the sour or bitter orange, whose juice is sharper and more aromatic than regular orange and which provides the acid backbone of the marinade. If you cannot find sour oranges, the universal substitute is two parts fresh orange juice to one part lime juice, with a splash of grapefruit if you have it. The rest of the mojo is generous: a head of garlic crushed into paste, dried oregano (Cuban oregano if possible, regular Mediterranean otherwise), cumin, salt and good olive oil. The pork shoulder is stabbed all over and the marinade pushed deep into the flesh, then left overnight so the acid begins to break down the muscle fibres. The roast itself is forgiving: low and slow, fat-side up, until the meat pulls apart with a fork and the skin crackles. Leftovers become the heart of a Cuban sandwich, layered with ham, Swiss cheese, mustard and pickles in pressed bread. Difficulty is low. The only thing to plan for is time: the marinade needs overnight, and the roast takes most of an afternoon.

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