For pork:
1 1 1/2 - 2 pound boneless pork shoulder roast
1 tablespoon Jamaican jerk seasoning
1/4 teaspoon dried thyme, crushed
1 cup water
1 tablespoon lime juice
6 8 inches flour tortillas
6 lettuce leaves (optional)
1 medium red or green sweet pepper, chopped (1/2 cup)
1 medium mango, peeled, seeded, and chopped, or 1 cup chopped pineapple

For Lime Mayo
1/2 cup fat-free mayonnaise
1/4 cup finely chopped red onion
1/4 teaspoon finely shredded lime peel
1 tablespoon lime juice
1 clove garlic, minced