Smoked Brisket Tortas

INGREDIENTS

• 1 vegetable oil
• 1/2 small red onion, finely chopped
• 1 jalapeño, seeded, finely chopped
• 1 15-ounce can pinto beans, rinsed
• Kosher salt, freshly ground pepper
• 1/4 fresh lime juice
• 1/4 sour cream
• 1/2 head of iceberg lettuce, thinly sliced (about 4 cups)
• 1/2 small red onion, thinly sliced
• 1 jalapeño, seeded, thinly sliced
• 1/2 fresh cilantro leaves
• 4 8-inch ciabatta rolls, split
• 8 thinly sliced provolone cheese
• 2 vegetable oil
• 1 thinly sliced smoked brisket
• 1/4 mayonnaise
• 1 avocado, halved, pitted, mashed
• Hot pepper sauce (for serving)