How to Make It
Put the dried shrimp in a bowl and cover with hot water. Let stand for 30 minutes. Drain and finely chop the shrimp.
In a large skillet, melt 3 tablespoons of the butter. Add the shrimp, scallion whites and sliced chile and cook over moderate heat until the scallion is softened, about 2 minutes. Add the corn kernels and stir well. Add the sugar and fish sauce and cook, stirring occasionally, until the corn is crisp-tender, about 5 minutes. Stir in the remaining 1 tablespoon of butter and the scallion greens, season with salt and serve.
Nuoc mam is the word for fish sauce in Vietnamese. Some brands we like are Flying Lion, Three Crabs and Squid.