When you garnish a wok recipe with red leaf lettuce, you want to use the full lettuce leaves, so their quality from stem to tip is important. Pick the head of Red Leaf Lettuce with the richest colors and look carefully at the leaf edges for signs of rot or wilting. A good fresh head of red leaf lettuce will have the leave edges frilly and standing up from their own structural integrity.
Red Leaf Lettuce leaf ends - full and not wilted