Umbuzada

Umbu and milk drink

The umbu tree is the pride of the sertão, the dry interior of Bahia, Pernambuco and Piauí: its swollen roots store water through the drought, and when the rains come between January and March it covers itself in small green-gold fruit. Families gather them by the sackful, and umbuzada, the fruit cooked and blended with milk and sugar, is drunk cold in the afternoon heat or eaten thick as a light supper. It tastes sharply sour and sweet at the same time, creamy and fruity, a little like a gooseberry milkshake. The common mistake is blending hot, acidic pulp with milk, which makes it curdle into grainy flecks. Cool the pulp completely, mix the sugar into the pulp before the milk goes in, and serve soon after blending. It is ready when it is smooth, pale yellow-green and coats the glass. Outside Brazil, look for frozen umbu pulp in Brazilian shops; failing that, use cajá (yellow mombin) pulp or tart green plums cooked the same way. Keep any leftovers in the fridge and drink within a day. Chef's tip: for the thick version eaten with a spoon, halve the milk and serve it in a bowl with a sprinkle of farinha or crushed cuscuz.