Step 1 Finely chop the shrimp until it is almost reduced to a paste but still has some chunks. Place the chopped shrimp in a medium bowl.
Step 2 Sprinkle over the salt and rice wine and stir well. Add the soy sauce and vigorously stir until mixture is emulsified. Stir in the sesame oil. Stir in the water chestnuts, cilantro and green onion until well combined.
Step 3Use the filling immediately, or wrap and refrigerate until ready to use, no more than a few hours.