Pf Chang's Tofu Lettuce Wraps

So similar to a family favorite, Lali's "PF Chang's Chicken Lettuce Wraps", that my family was more than happy to eat tofu -- always a good sign!

• Ready In: 1 hr
• Serves: 4
• Yields: 8 wraps

Ingredients

• 12  ounces extra firm tofu
• 4  tablespoons brown sugar
• 4  tablespoons soy sauce
• 1  teaspoon rice vinegar
• 4  tablespoons olive oil
• 2  cups  diced water chestnuts
• 1 1⁄3 cups  diced  mixed mushrooms
• 1⁄4 cup  diced  white onion
• 2  teaspoons  minced garlic
• 1  tablespoon soy sauce
• 1  tablespoon brown sugar
• 8  iceberg lettuce leaves

• SAUCE

• 1⁄4 cup sugar
• 1⁄2 cup water
• 2  tablespoons soy sauce
• 2  tablespoons  rice wine vinegar
• 2  tablespoons ketchup
• 1  tablespoon lemon juice
• 1⁄4 teaspoon  sesame oil
• 1  tablespoon spicy mustard, thinned in 1 tablespoon hot water
• 1  teaspoon  minced garlic

Directions

1. Drain the tofu, and then remove excess moisture by cutting it in half lengthwise and microwaving on high, uncovered, for two minutes. Gently squeeze out and wipe off excess moisture, then throw tofu in the freezer for one or two hours before removing to thaw in the fridge -- this will give the tofu a slightly heavier texture.
2. Cut tofu into tiny cubes (about 1/4" thick) and arrange in a lidded dish to be marinaded. Combine brown sugar, soy sauce and rice vinegar in a small bowl. Pour over tofu. Let sit in the refrigerator for at least an hour; I usually leave it overnight.
3. Heat olive oil in a skillet over medium-high heat. Add tofu, water chestnuts, mushrooms, onion, and garlic and cook until vegetables are tender.
4. Dissolve 1 Tsp brown sugar in 1 Tsp soy sauce and add to pan. Saute until well mixed and heated through. Spoon mixture into lettuce leaf "bowls".
5. For the sauce, combine sugar, water, soy sauce, rice vinegar, ketchup, lemon juice, sesame oil, mustard and garlic in a bowl; pour over lettuce wraps and serve.