Poco Loco Burger

Name: Poco Loco Burger
Ingredients: One 8-ounce package tempeh, crumbled in a food processor; 1 tablespoon canola oil, plus more for cooking; 1 small white onion, diced; 1 red bell pepper, diced; 2 serrano peppers, minced; 3 cloves garlic, minced; 1 cup black beans; 1 cup refried beans; 1/2 bunch fresh cilantro (leaves and most of stems), minced; 1 teaspoon chili powder; 1 teaspoon ground cumin; Salt and ground white pepper; Half a 9.25-ounce bag tortilla chips, ground to dust; 1/2 cup masa harina; One 16-ounce package silken tofu; 5 stems cilantro, stems and leaves minced; 2 cloves garlic; 1 scallion, minced; 1/2 jalapeño, minced; One 12-ounce container vegan sour cream; Juice from 1 lime; Salt and ground pepper