The Crunchiest Vegetable Salad

Place cucumber, radishes, and scallions in a colander set inside a bowl of ice water. Press down on vegetables to submerge. Let soak, stirring occasionally, until very firm and crunchy, at least 15 minutes and up to 1 hour. Drain and pat dry. Meanwhile, cook beans in a large pot of boiling generously salted water just until their color intensifies and they are barely softened, about 1 minute. Using a slotted spoon, immediately transfer to a large bowl of salted ice water (use about 1 Tbsp. salt for every 2 quarts water). Return water in pot to a boil and repeat cooking process with sugar snap peas; add to bowl of ice water with beans. Let vegetables cool; drain and pat dry. Trim beans and remove strings from sugar snap peas. Slice into large pieces on a steep diagonal.