Preparation Stir together butter, feta, mint, and a rounded 1/2 teaspoon salt in a large bowl. Cook corn in a large pot of boiling water until crisp-tender, about 3 minutes. Transfer with tongs to butter mixture and toss until well coated. Cooks' note:Mint-feta butter can be made 2 days ahead and chilled.
Preparation Stir together butter, feta, mint, and a rounded 1/2 teaspoon salt in a large bowl. Cook corn in a large pot of boiling water until crisp-tender, about 3 minutes. Transfer with tongs to butter mixture and toss until well coated. Cooks' note:Mint-feta butter can be made 2 days ahead and chilled.