At Keremo Cakes, a boutique bakery in Cresskill, New Jersey, business is booming with the sweet and explosive taste of one of their best-selling treats: the hot cocoa bombs. “With the hot cocoa bombs going viral, we got many requests. Once we saw the demand, we quickly shifted to production mode, we put up an online order form, and then all of a sudden we had lines out the door,” said Karolin Cakirdas, owner of Keremo Cakes. The viral chocolate spheres, which melt the instant hot milk is poured on them, are filled with hot cocoa powder, marshmallows and decorated depending on the holiday. The bakery, which specializes in custom-designed cakes, cupcakes, cake pops, and artisan desserts, has adapted its b...