Rosca de Coco — coconut ring cake

i. Origin & history

The word rosca covers a whole family of ring-shaped baked goods in Spanish and Portuguese — from the small fried rosquillas of Spanish Easter to the great enriched-bread Rosca de Reyes of Epiphany. A ring shape bakes evenly, slices neatly into wedges and looks festive with very little effort, which is why it turns up in so many kitchens. The rosca de coco is the cake branch of that family rather than a single fixed recipe with a recorded birthplace.

Coconut came into Iberian-influenced baking largely through the tropical Americas. Across Brazil, the Caribbean, Mexico and Central America, grated coconut and coconut milk are everyday ingredients, and they appear in sweets as different as cocadas, Brazilian quindim and Puerto Rican tembleque. Once desiccated coconut became a cheap packaged staple in the twentieth century, a coconut version of the standard butter ring cake was an obvious step, and versions now appear in family recipe books in Spain, Latin America and the Philippines.

There are two quite different things sold under the same name, and it is worth separating them. In Spanish-speaking homes, rosca de coco is usually the cake given here — a chemically leavened sponge baked in a ring or Bundt-style mould. In Brazil, rosca de coco more often means a sweet yeasted bread, braided or coiled into a ring around a filling of coconut and condensed milk, sold in bakeries by the slice. Both are good; they are simply different doughs.

The ring is sometimes said to symbolise eternity or the circle of the family, and the cake is popular at Christmas, at Epiphany as a lighter alternative to the yeasted rosca, and at christenings. Those associations are informal rather than liturgical: this is a cake that is welcome at any table, and many families make it most often simply because it keeps well for several days.

ii. What the coconut milk and the ring mould do

Desiccated coconut is dry and absorbent. Folded into a standard butter-cake batter, it soaks up moisture as the cake bakes and can leave the crumb dry and gritty. The coconut milk in this recipe is there to compensate: it replaces the plain milk of an ordinary sponge, rehydrates the coconut, and adds its own fat, which keeps the crumb tender for days rather than hours.

Soaking the coconut in the coconut milk for ten minutes before it goes into the batter makes a noticeable difference. The shreds soften and swell, so they stop competing with the flour for liquid, and the finished cake has a moist, slightly dense, almost macaroon-like texture instead of a dry crumb with hard flecks.

The ring mould solves a different problem. A batter this heavy with coconut and fat is slow to cook through in a deep round tin: the edges dry out before the centre sets. The hollow centre of a ring mould lets heat in from the middle as well as the sides, so the whole cake bakes evenly in forty-odd minutes and stays moist all the way round.

The creaming stage still matters. Butter and sugar beaten until pale and light trap air that the baking powder then expands; under-creamed batter gives a squat, heavy ring. Add the eggs one at a time, and if the mixture starts to look curdled, add a spoonful of the flour to bring it back before continuing.

iii. Ingredients

Makes 12 servings · scroll the side panel to adjust

• 200 g unsalted butter, softened
• 250 g caster sugar
• 4 eggs, at room temperature
• 1 lemon, finely zested
• 1 tsp vanilla extract
• 300 g plain flour
• 2 tsp baking powder
• ¼ tsp fine salt
• 150 g desiccated coconut
• 250 ml full-fat coconut milk
• 100 g icing sugar, for the glaze
• 1½ tbsp coconut milk or lime juice, for the glaze
• 30 g coconut flakes, toasted

Unsweetened desiccated coconut is the right choice; sweetened shredded coconut (common in the US) works but makes the cake noticeably sweeter, so cut the sugar by 30–40 g. Use full-fat coconut milk from a can, shaken well — the fat is what keeps the cake moist. Lemon zest is the traditional Iberian note in almost every butter cake; lime zest suits the Caribbean versions. For the glaze, coconut milk gives a soft white finish, while lime juice gives a sharper one that cuts the richness. If you have no ring mould, a 23 cm Bundt tin works; a 23 cm round tin works too, but add about 10 minutes and check carefully.

iv. Method

1. Stir the desiccated coconut into the 250 ml coconut milk and leave to soak for 10 minutes. Heat the oven to 170 °C (340 °F), 160 °C fan. Butter a 24–25 cm ring mould thoroughly, getting into every curve, then dust with flour and tap out the excess.
2. Beat the butter and caster sugar with an electric mixer for 4–5 minutes, until pale, fluffy and almost white.
3. Beat in the eggs one at a time, mixing well after each; add a spoonful of the flour with the last egg if the mixture looks curdled. Beat in the lemon zest and vanilla.
4. Whisk the flour, baking powder and salt together. Fold a third into the butter mixture, then half the soaked coconut and its milk, then another third of flour, the rest of the coconut, and the last of the flour. Stop as soon as no dry flour is visible.
5. Spoon the batter into the mould and level it. Bake for 40–50 minutes, until golden, risen and springy, and a skewer pushed into the thickest part comes out clean.
6. Cool in the mould for 15 minutes — long enough to firm up, not so long that it sticks — then run a thin knife round both edges and turn out onto a rack. Cool completely.
7. Whisk the icing sugar with the coconut milk or lime juice to a thick but pourable glaze. Spoon it over the top so it runs down the sides, then scatter the toasted coconut flakes over while it is still wet. Leave 20 minutes to set before slicing.

v. Tips & common mistakes

• Soak the coconut first. Dry coconut steals moisture from the batter and leaves hard flecks in the crumb. Ten minutes in the coconut milk prevents both.
• Grease the mould more than you think necessary. Coconut and sugar caramelise against the tin and glue the cake in. Soft butter brushed into every ridge, then a flour dusting, is the reliable method.
• Turn out after 15 minutes, not an hour. As the cake cools completely in the tin, the sugars set like glue. Turn it out while it is still warm.
• Watch the colour in the last ten minutes. Coconut browns faster than flour. If the top is deep gold before the skewer comes out clean, lay a sheet of foil loosely over it.
• Glaze only a fully cold cake. On a warm cake the glaze melts, soaks in and disappears instead of setting as a white coat.
• Toast the flakes separately. Toast them in a dry pan over a medium heat, stirring constantly, for 3–4 minutes; they turn from pale to burnt in seconds, so tip them out the moment they are golden.

vi. Variations

Brazilian rosca de coco is a yeasted sweet bread, rolled around a filling of grated coconut cooked with condensed milk, coiled or braided into a ring and often glazed with more condensed milk. Rosca de coco y piña adds drained crushed pineapple to the batter, a Caribbean combination also found in pineapple-coconut tart. A tres leches-style rosca is soaked after baking with evaporated milk, condensed milk and coconut milk. Replace the coconut with ground almonds for an almond rosca, close in spirit to the Spanish sponges of the Christmas table. For a different coconut texture altogether, try the custardy Brazilian quindim or the chewy cocadas.

vii. Serving & storage

Rosca de coco is served in wedges at room temperature, usually with coffee, café con leche or hot chocolate in the afternoon. It needs no accompaniment, though a spoonful of lightly whipped cream or a few slices of fresh mango or pineapple makes it a dessert.

Because of the coconut milk, it keeps unusually well: 4 days in an airtight tin at room temperature, and it is often better on the second day. In a hot, humid kitchen, refrigerate it after the first day and bring slices back to room temperature before eating. The unglazed cake freezes well for up to 2 months, wrapped tightly; thaw overnight at room temperature and glaze on the day you serve it.

ix. More from Spanish & Portuguese

• Rosca de Reyes — Three Kings ring bread
• Queen Cake — small currant butter cakes
• Rosquillas — Spanish ring doughnuts
• Cocadas — Latin American coconut sweets
• Quindim — Brazilian coconut custard
• Mantecados — Andalusian crumble biscuits