Combine chickpeas, aquafaba (chickpea brine), garlic, tahini, lemon juice, and salt in a food processor. (Depending on your chickpeas, you may need two or three Tablespoons of aquafaba to reach your preferred amount of creaminess.) Stop occasionally to scrape down the sides of the food processor, until the hummus is completely creamy. Remove from food processor and set aside.
To make black bean hummus
Combine black beans, garlic, tahini, lemon juice, cumin, and salt in a food processor. Stop occasionally to scrape down the sides, until the hummus is completely creamy. Remove from food processor and set aside.
To make the wraps
Warm tortillas in a dry skillet or grill pan on both sides on a medium heat, or warm them in the microwave for about 30 seconds. (Tortillas are more pliable and easier to roll into a wrap if they are warm.)Fill warmed tortillas with spoonfuls of rice, chickpea hummus, black bean hummus, romaine, and turnip pickles. Fold each wrap like a burrito.
(Optional) Warm each wrap in a grill pan, starting with the seam side down. Brown each side for a few minutes until they get good, dark grill marks.
Notes
Aquafaba is the chickpea brine from canned (or homemade) chickpeas. Many people use oil or water to thin hummus. But by using chickpea liquid, you keep all of that chickpea flavor without diluting it. Plus, chickpea liquid makes the hummus beautifully creamy.Don't worry about fully cleaning the food processor between making the chickpea and black bean hummus. They are similar enough in flavor profile, it won't matter if there's some chickpea hummus left in the container before making the black bean variety.