20 min — Easy — American
A mandoline cuts radishes and fennel to ⅛-inch slices — thin enough to turn translucent and bend slightly without going limp. Two Ruby Red grapefruits contribute both zest for the dressing and crosscut rounds for the salad itself. Sherry vinegar, Dijon, honey, and half a cup of olive oil form the vinaigrette; minced shallots and fennel fronds go in as well. Five ounces of baby arugula provides the peppery base. Ready in 20 minutes, serves four.