In a bowl, mix the masa harina and the salt.
Add the water to the bowl and knead the dough for 2-3 minutes in the mixing bowl until it is smooth and forms a cohesive ball. If you feel that the dough breaks/crumbles add some water and keep kneading it until you get a homogenous dough.
Place the dough in a bowl, covered with a towel, and let it rest for 10-20 min.
While the tortilla dough rests, start your Spark and set it to 600°F with a pizza stone placed on the net.
Divide the dough into ping-pong size pieces. Round each of them to a ball.
Place the dough ball between two pieces of parchment paper in a tortilla press. Then gently press the dough ball until it forms a 5-inch tortilla.
Begin baking by removing the tortilla off the tortillas press quickly onto the pizza stone.
Gently transfer the remaining tortillas to the stone. Let the tortilla bake on the first side for 30-40 sec.