This recipe uses just three ingredients—cocoa powder, marshmallows, and soy milk—to create a rich, melt-in-your-mouth chocolate mousse. It requires no cooking on the stovetop; simply heat and mix in the microwave, then chill in the refrigerator until firm. It's quick and easy to make, perfect for busy days, as an accompaniment to your home café experience or as a light dessert. A sprinkle of cocoa powder on top adds a touch of elegance.