In a bowl, combine the flour, baking powder, oil and salt. Add the hot water starting with 3/4 cup. Stir until a shaggy dough begins to form adding additional water as needed.
Turn the dough out onto a floured counter. Use your hands to knead the dough for 1-2 minutes until it forms a smooth ball.
Cut the dough into 12 equal wedges, then roll each wedge into a ball (they don't need to be perfect). Cover with a damp towel and let rest for about 15 minutes.
Use a rolling pin or a tortilla press to roll the dough out into an 8 inch circle.
Heat a skillet over medium-high heat. Cook about 1 minute, until little bubbles appear on the surface. Flip and cook another 30-60 seconds, or until the bottom is slightly golden. Set on a plate and cover with a towel. Repeat with the remaining dough.
Serve warm or save for later. Tortillas are best kept in an air tight container for a few days.