You can also use sugar lumps to progress in specific minigames. Second, they increase your CpS by 1 percent per upgrade. Some of these upgrades have two effects: first, they level up the buildings and, in some cases, unlock mini-games. Use sugar lumps to upgrade your buildings. What Do Sugar Lumps Do in Cookie Clicker? In fact, sugar lumps don’t even appear until you’ve passed the one billion cookie mark. They take longer than almost anything else to become available and stack slowly. Sugar lumps are one of the rarest resources in the game.