Shrimp with Rice Vinegar Dipping Sauce

In a small nonreactive saucepan, combine all of the ingredients except the shrimp and bring to a boil. Transfer to a bowl and let cool, then refrigerate until chilled or for up to 1 day.

Prepare an ice water bath. Cook the shrimp in a medium saucepan of boiling salted water, stirring occasionally, until pink, about 2 minutes. Drain the shrimp and plunge into the ice bath; drain again and pat dry. Transfer the shrimp to a platter and serve with the dipping sauce.