In Spain, the Three Kings' Day, or January the 6th, is the day presents are exchanged. They also promise misbehaving kids that they will receive charcoal on this date. Later, a candy that resembled charcoal was developed, and given to both well-behaved and badly behaved children, in small bags marked "charcoal".
70 grams Royal Icing (Beat 200 grams powdered sugar with an egg white and a few drops of lemons juice)
Black food coloring
700 grams granulated sugar
230 ml water
Mix a batch of royal icing, then add black food coloring. Set it aside. Mix sugar and water together in a saucepan, and when it reaches 130 degrees Celsius, remove from heat. Add black royal icing, and mix until it grows, deflates, and grows again. In that moment, place liquid candy in a silicone baking pan. When it grows hard,