Abstract: A method of producing sugar through the recycling of a carbonation scum produced after a first carbonation of a sugar juice treated with a lime milk comprises separating the scum after the first carbonation. The scum-free sugar juice is then filtered for producing sugar. An amount of the separated scum is diluted with water. After diluting, the pH of the diluted scum is adjusted, and a thick portion of the amount of the scum is separated and activated. The activated thick portion of the scum is then recycled for introduction with a sugar juice.