Free Lettuce Wraps at P.F. Chang's

According to P.F. Chang's Twitter feed, the Chinese bistro will be offering a coupon for their signature lettuce wraps:

Our 18-year anniversary FREE Lettuce Wrap promo begins tomorrow. Visit our facebook fan page to get yours.

Various reports say the coupon will be available on the P.F. Chang's Facebook page tomorrow (7/6) so keep an eye out.

If you are wondering, the wraps are described this way on the menu:

Our signature appetizer. Wok-seared minced chicken, mushrooms, green onions, and water chestnuts served over crispy rice sticks and served with cool, crisp lettuce cups.

Also, the wraps can be ordered vegetarian style and made with tofu.