Arancini with a Molten Mozzarella Centre

Arancini are the great Sicilian street snack: cold risotto rolled into balls, crumbed and fried until shatteringly crisp. The twist tucked inside is a cube of mozzarella buried at the centre, which melts as the balls fry so that each one pulls into a long, satisfying string of cheese when you break it open. Make them with leftover risotto or cook a batch specially. Either way, serve them hot, while the centre is still molten and the crust still crackles.

The Story

Arancini are one of the most cherished foods of Sicily, the large island off the southern tip of Italy, where they are sold hot from bakeries, friggitorie and street stalls across the region. The name comes from the Italian word for orange, arancia, and describes the little balls’ appearance: round, golden and roughly the size of a small citrus fruit once fried to a deep amber crust. The comparison is apt, and it has stuck for generations, to the point that the diminutive arancini — little oranges — is simply what everyone calls them.

There is a long-running and good-natured rivalry over the name and the shape, which differs across the island. In the east, around the city of Catania, they are traditionally cone-shaped and take the masculine form arancini; in the west, around Palermo, they are round and take the feminine arancine. Catanians will tell you the cone echoes the profile of Mount Etna, the volcano that looms over their coast; Palermitans are unconvinced. The argument runs hot enough that in 2016 the Accademia della Crusca, Italy’s venerable authority on the language, was asked to rule on the correct spelling and diplomatically declined to settle it. The dish itself is woven into everyday Sicilian life, and 13 December, the feast of Santa Lucia, is traditionally a day for eating them by the dozen, when much of the island forgoes bread and flour in her honour.

The rice itself is essentially a risotto, and Sicily’s appetite for rice dishes owes much to the island’s layered history. Rice cultivation and the use of saffron, which lends arancini their golden hue, are among the culinary legacies left by the Arab rule of Sicily between the ninth and eleventh centuries. That heritage threads through much of the island’s cooking, from sweet couscous to savoury rice, and arancini sit squarely within it. Because the base is a risotto, everything that makes a good mushroom risotto work applies here too: a proper toasting of the rice, the wine cooked off before the stock goes in, and the grains added a ladleful at a time so they release their starch and turn creamy rather than boiled.

Classic fillings vary widely. The most traditional, arancini al ragù, is filled with a rich meat sauce and peas; another common version, al burro, holds butter, béchamel and ham. The molten cheese centre used here is in that same generous spirit, a pocket of melting richness hidden within the creamy rice and the crisp crust, and it shares its stringy pleasure with the layered mozzarella of an aubergine parmigiana. If you want to lean into the Calabrian side of southern Italy, tucking a small nugget of spicy nduja alongside the mozzarella gives each ball a hidden hit of heat, the same trick that makes baked eggs with nduja and mozzarella so good.

Getting the texture right

The single thing that separates good arancini from a greasy, collapsing mess is the texture of the risotto. It must be cooked until properly creamy, seasoned assertively — cold food always needs more salt than you think — then spread thin on a tray and cooled completely, ideally in the fridge for a couple of hours or overnight. Warm risotto is impossible to shape and will burst in the oil; cold, firm risotto moulds cleanly around the cheese and holds together. Beating in an egg yolk and plenty of grated Parmesan while the rice is still warm helps it set into a mixture that behaves almost like soft dough once chilled.

Shaping is easier with slightly damp hands, which stops the rice sticking. Take a heaped tablespoon, flatten it in your palm, press in a cube of mozzarella, then draw the rice up and around it, sealing any gaps completely; a hole in the coating is where hot cheese and steam will escape in the fryer. Chill the formed balls again for at least twenty minutes before crumbing, and use the standard flour-egg-breadcrumb order so the coating grips. Fine dried breadcrumbs give a smoother, more even crust than fresh; if you want extra crunch, panko works well.

Fry at a steady 180°C. Too cool and the crust turns oily and pale before the centre heats through; too hot and the outside burns while the middle stays cold. Use a thermometer if you have one, and let the oil come back up to temperature between batches, since a crowded pan drops the heat and gives soggy results. Fry only three or four at a time, turning them so they colour evenly, and drain on kitchen paper. Serve while the mozzarella is still molten, on their own or with a simple tomato sauce or a spoon of fresh basil and mint pesto for dipping.

Troubleshooting

Most arancini disasters happen in the fryer, and nearly all of them trace back to one of three causes. If they burst and leak cheese, the coating had a gap or the rice was too wet and loose: seal any holes carefully when shaping and make sure the risotto was properly cold and firm. If the crust is dark but the centre is barely warm, the oil was too hot and the balls too large, so drop the temperature to a steady 180°C and shape them a little smaller. If they turn out greasy and pale, the oil was too cool, usually because the pan was overcrowded or hadn’t recovered its heat between batches; fry fewer at a time and wait for the temperature to climb back up. A cook’s thermometer removes almost all the guesswork, and if you do not own a deep-fryer, a heavy saucepan filled no more than a third with oil is safer and works perfectly well.

The other quiet danger is under-seasoning. Cold rice tastes blander than warm, so a risotto that seemed well seasoned in the pan will taste flat once it is chilled, shaped and fried. Season the risotto firmly while it cooks, and give the finished arancini a light scatter of salt the moment they come out of the oil, while the surface is still glistening and will hold it.

Make-ahead and storage

Arancini are made for cooking in advance. Shape and crumb them, then keep them in the fridge for up to a day or open-freeze them on a tray before bagging up; frozen arancini fry straight from the freezer, needing only an extra minute or two in the oil. Cooked leftovers reheat well in a hot oven, around 200°C for ten minutes, which crisps the crust back up far better than a microwave, which turns it damp. They are best eaten the day they are fried, but a batch in the freezer is one of the most rewarding things to have on hand for an impromptu snack.