Tex-Mex wraps

Ingredients

• 1/3 cup sour cream
• 1/4 cup chunky salsa
• 2 to 3 tsp Tabasco sauce
• 1/2 tsp ground cumin
• 540-mL can black beans , drained and rinsed
• 2 plum tomatoes , coarsely chopped
• 1/2 small red onion , coarsely chopped
• 2 flour tortillas , preferably whole wheat, about 9 in. wide
• 2 cups chopped iceberg or romaine lettuce