Asian Lettuce Wraps

16 Boston Bibb or butter lettuce leaves 1 pound lean ground beef
1 large onion, chopped
2 cloves fresh garlic, minced 1 tablespoon soy sauce
1/4 cup hoisin sauce 2 teaspoons ground ginger
1 tablespoon rice wine vinegar Asian Chile pepper sauce (optional)
1 (8 oz.) can water chestnuts, drained & finely chopped 1 bunch green onions, chopped

• Rinse whole lettuce leaves and pat dry, being careful not tear them. Set aside.
• In a medium skillet over high heat, brown the ground beef stirring often and reducing the heat to medium, if necessary. Drain. Add the onion, stirring frequently. Add the garlic, soy sauce, hoisin sauce, ginger, vinegar, and Chile pepper sauce to the onions, and stir. Stir in chopped water chestnuts, green onions, and continue cooking until the onions just begin to wilt, about 2 minutes.
• Arrange lettuce leaves around the outer edge of a large serving platter, and pile meat mixture in the centre. To serve, allow each person to spoon a portion of the meat into a lettuce leaf. Wrap the lettuce around the meat like a burrito, and enjoy!