TEST KITCHEN TIP: WARMING TORTILLAS
Warming the tortillas up before serving is crucial for both their flavor and texture. If your tortillas are very dry, pat each tortilla with a little water before warming them.
Toast tortillas, one at a time, directly on cooking grate over medium gas flame until slightly charred around edges, about 30 seconds per side. Or toast tortillas, one at a time, in dry skillet over medium-high heat until softened and speckled brown, 20 to 30 seconds per side. Once warmed, immediately wrap the tortillas in aluminum foil or a clean dish towel to keep them warm and soft until serving time.