3 hr 15 min — Hard — American
Gelatin blooms in cold water while sugar, corn syrup, and more water cook to the soft-ball stage on a candy thermometer — that syrup pours into the mixer and whips with cherry flavoring into a fluffy, glossy marshmallow. The finished swirl pipes onto discs of melted semisweet chocolate and sets firm over time. A dusting of powdered sugar keeps the marshmallow from sticking. Strawberry or raspberry extract can substitute for cherry; the 3-hour total time accounts for the chocolate setting fully.