First you want to make your jalapeño cilantro sauce.
In a food blender or any type of blender, add your sour cream, jalapeños, garlic cloves, lime juice, olive oil, salt and apple cider vinegar. Blend until everything is well pureed and turns into a liquid sauce.
Cover and set aside.
Bring a large pot filled halfway with water and salt to a boil. Add cut up potatoes and let boil for about 7-10 minutes, or until fork tender. Drain the potatoes.
Heat 2 tbsp of olive oil in large skillet over medium high heat. Add potatoes to skillet, along with cumin, chili powder, paprika, garlic powder and salt. Mix together so each potato gets seasoned. Sauté for about 5-7 minutes, until potatoes start to brown and crisp up.
While potatoes are cooking, place your black beans and refried beans in a small saucepan to heat up over medium heat.
Wrap the tortillas in a damp paper towel and heat in microwave for 25-30 seconds.
To assemble tacos, spread some bean mixture on bottom, followed by potatoes, red peppers, avocados, lettuce and jalapeño cilantro sauce. Sprinkle some chopped cilantro on top (optional). Serve with lime wedges (optional).
Enjoy!