Defrost the spring roll leaves. Roughly chop the chocolate. Peel bananas, cut them crosswise and lengthwise in half
Place the spring roll leaves next to each other on the work surface. Put 1 banana quarter and approx. 1/8 of the chocolate in the lower left corner, leaving approx. 4 cm free at the top. Brush the edges with water. Beat the tip over the filling. Turn the corners from both sides towards the middle and roll up to a firm roll
Heat the oil in a frying pan and fry the rolls in portions in the hot oil for approx. 6 minutes, turning them over, until golden brown. Drain on kitchen paper and arrange on plates. Dust with icing sugar and decorate with lemon balm