- 1 medium onion, cut into chunks
- 2 garlic cloves
- 2 tablespoons sugar
- 1 tablespoon ground mustard
- 1/2 teaspoon ground ginger
- 1 1/2 teaspoons pepper
- 1/2 teaspoon cayenne pepper
- 1/2 cup soy sauce
- 1/4 cup water
- 2 pounds beef sirloin tip roast, cut into 1/4 inch thick slices
- CUCUMBER SAUCE:
- 1 medium cucumber, peeled, seeded and cut into chunks
- 4 garlic cloves
- 1/2 teaspoon salt
- 1/3 cup cider vinegar
- 1/3 cup olive or vegetable oil
- 2 cups sour cream
- 8 pita breads, warmed and halved
- thinly sliced onion
- Chopped tomato
- In a blender or food processor, place the onion, garlic, sugar, mustard, ginger, pepper and cayenne; cover and process until onion is finely chopped. Add soy sauce and water; process until blended. Place the beef in a large resealable plastic bag. Add marinade. Seal bag and turn to coat; refrigerate for 1-2 hours.
- For sauce, combine the cucumber, garlic and salt in a blender or food processor; cover and process until cucumber is chopped. Add vinegar and oil; process until blended. Transfer to a boil; stir in sour cream. Refrigerate until serving.
- Drain and discard marinade. Grill beef, covered, over medium-hot heat until meat reaches desired doneness. Place beef in pita halves. Top with cucumber sauce, sliced onion and chopped tomato. Refrigerate any remaining sauce.