Yes, flour tortillas work fine, particularly for soft tacos. I suggest preheating them wrapped in parchment and foil in an oven or in a pan on a stovetop. I don't recommend heating them in a microwave as they will get tough. If you prefer not to use tortillas, thinly sliced jicama or crisp bib lettuce make a fresh alternative to tortillas. You can also create a taco bowl with the filling served on salad greens and toppings, along with a few tortilla chips.