Churros are fried until they become crunchy, and may be sprinkled with sugar. The surface of a churro is ridged due to having been piped from a churrera, a syringe-like tool with a star-shaped nozzle. Churros are generally prisms in shape, and may be straight, curled or spirally twisted. Filled, straight churros are found in Cuba (with fruit, such as guava), Brazil (with chocolate, doce de leite, among others), and in Argentina, Bolivia, Peru, Chile and Mexico (usually filled with dulce de leche or cajeta but also with chocolate and vanilla). In Colombia and Venezuela, churros are glazed with arequipe and sweetened condensed milk.