Pork Soong in Lettuce Cups

Years ago, when my husband, Greg, was in graduate school, we lived in Chicago. We would go with friends to a favorite Cantonese restaurant in Chinatown and order this dish. To eat it, you cup a big leaf of butter lettuce in one hand, use your other hand to spoon a mound of the flavorful diced vegetable and pork mixture into the leaf, and then fold it into a burrito-style bundle. It is nonstop deliciousness, because putting the bundle down means it all falls apart. The peas give it color, th