Pour about half the sauce over the shrimp in a bag or shallow bowl and allow to marinate at least 20 minutes and up to a few hours. Reserve the other half for dipping sauce.
When shrimp are done marinating cook shrimp along with marinate is a skillet over medium high heat. Do not overcook. As soon as shrimp are pink and opaque remove from the pan and allow them to cool.
Toast the Sesame Pancake in the oven or toaster according to the package instructions. Cut them into 24 base pieces. I used a 2 inch cookie cutter.
Slice water chestnuts into 24 thin rounds.
Center a shrimp onto each base, top with a chestnut round and secure with a toothpick. Garnish with a bit of green onion.