Sugar Lumps are a secondary in-game currency in Cookie Clicker that can be spent on various things, notably leveling up buildings. They are unlocked once youve baked at least one billion cookies. Here are some ways to spend Sugar Lumps:

• Leveling up buildings: Use Sugar Lumps to upgrade your buildings. Some of these upgrades have two effects: first, they level up the buildings and, in some cases, unlock mini-games. Second, they increase your cookies per second (CpS) by 1 percent per upgrade.

• Unlocking minigames: Some building upgrades unlock minigames, which can provide various benefits.

• Harvesting achievements: Harvesting Sugar Lumps is necessary for every player who wants to get all Cookie Clicker achievements.

There are different types of Sugar Lumps, including:

• Golden Sugar Lumps: They double the cookies you have stored in the bank up to an entire day of CpS. When harvested, they also increase the spawn chance for golden cookies. You get a 10 percent boost for the next day.

• Caramelized Sugar Lumps: They look like darker golden sugar lumps with a bit of caramel on top. They provide a permanent 2 percent CpS boost.

Overall, Sugar Lumps are a valuable resource that can help you progress in the game and achieve various goals.