Lay the tortilla flat on the workbench. Brush it very lightly with olive oil.
Arrange the lettuce leaves in the center of the tortilla, leaving a border of about 2 in. (5 cm) uncovered.
Place the bean salad in a sieve to drain excess vinaigrette, reserving the vinaigrette. Mix together the bean salad and the rice. If the mixture is dry, add enough of