Combine the vinegar, soy sauce, sugar, oil and 1 tablespoon water in a medium bowl and whisk to combine. Add the cucumbers, cover, and let marinate in the refrigerator for at least 1 hour. Serve chilled.
Adapted from "One Dish at a Time: Delicious Recipes and Stories from My Italian-American Childhood and Beyond" by Valerie Bertinelli © Rodale 2012. Provided courtesy of Valerie Bertinelli. All rights reserved.