Jicama tortillas can be "softened" in different ways: 1) Place them in a steamer insert and steam over boiling water for 2 minutes. Drain over a kitchen towel. 2) Place them in a microwave-safe bowl with 2 tablespoons of water, cover, and microwave on high for 2 minutes. Drain over a kitchen towel. 3) Heat a large griddle over medium heat. Brush jicama tortillas with a small amount of oil and heat 30 seconds per side, until soft.