In a bowl combine grilled vegetables, sesame seeds, sesame oil, mint. Transfer hot water to bowl that will fit the whole rice wrapper flat. Place one sheet of rice paper in water until softened. Place wrapper on plastic board or towel or wooden cutting board. Take a small amount of the greens and place on lower third of rice paper. Place about 1 1/2 T of vegetable mixture on greens. Place a few piece of pickled ginger over veggies. Roll up roll in spring roll fashion. Serve with Thai Chili Sauce.
Dip rice paper wrappers into hot water. Place on counter top. Place lettuce and vegetables on wrapper, roll like a spring roll. Serve with Thai chili sauce.
Sweet Thai Chili Sauce:
In a medium saucepan, over medium-high heat, combine rice vinegar and sugar. Cook until reduced to a syrup-like consistency. Combine remaining ingredients to reduced liquid and mix well. Serve with summer rolls.