Cut ½ cup of sweetened jackfruit into strips. Spread 1 cup of sugar on a plate. Peel and halve 12 saba bananas lengthwise and roll them in the sugar.
Lay each banana half on one of 24 spring roll wrappers with 2-3 jackfruit strips. Fold in the sides, roll up tightly, and seal the pointed edge with a little water. Roll in the remaining sugar.
Heat 1in / 2.5cm of canola oil in a skillet to 350-375°F / 175-190°C. Fry the turon seam side down in batches, turning once or twice, until golden and caramelized. Drain on a wire rack.
