The Rhode Island Greening Apple was developed in its home state (where it is, probably obviously, the official fruit) around 1796! It's a very round, yellowish-green apple, and is known for retaining its sharp taste in cooking. I haven't quite mastered the art of piping a perfect ball-shaped figure that retains its shape, but this little hemisphere would make a fine topper for any apple dessert (cupcakes, muffins, whatever). All you'll need is stiff consistency royal icing in yellowish-green and brown, round tips #12 and #4, a flower nail, a Styrofoam brick to rest the nail in, a glue stick, parchment paper squares, and a dusting pouch filled with a 50/50 mix of powdered sugar and cornstarch. Start by sticking a parchment square to the flower nail with a dab from the glue stick.