Combine sugar, water and vinegar in a buttered 4 cup glass measure; cover with plastic wrap. Microwave 12 to 15 minutes on Roast or until candy forms a firm ball in cold water (240 degrees). Meanwhile, beat egg white in medium mixer bowl until stiff peaks form. Pour candy syrup in thin stream into egg white, beating constantly with mixer. Add vanilla; beat until mixture is stiff. Fold in nuts. Drop mixture by teaspoonfuls onto wax paper. Cool. Makes approximately 30 candy pieces. Tip: For extra color, add 1/4 cup chopped candied cherries when adding nuts.