One of the simpler sandwiches at LA’s Fundamental is a cross-cultural melt with mozzarella and Cotija (a Mexican cow-milk cheese), shredded chicken, mashed avocado and pickled jalapeños. Slideshow: Hot Melted Sandwich Recipes
In a bowl, mash the avocado with a fork. Stir in the yogurt, lime juice, onion, jalapeño, cumin and 1 tablespoon of olive oil and season with salt and pepper.
In a large nonstick skillet, heat the remaining 2 tablespoons of olive oil. Add the chicken in an even layer and cook over moderately high heat until crisp on the bottom, about 3 minutes. Scatter the mozzarella and Cotija cheeses over the chicken, cover the skillet and remove from the heat. Let stand until the mozzarella is melted.
Split the rolls and spread the mashed avocado on the bottom halves. Top with the chicken mixture, then add the pickled jalapeños, tomatillo salsa and lettuce. Close the tortas and serve right away.
Crisp pilsner: Left Hand Polestar.