Yeast Ores are items that grant the player permanent bonuses when collected. Most of them can only be earned by chance from Balloon Expeditions to Beast-Yeast episodes, increasing up to 10.0% depending on the condition of the Cookies on each expedition.
Yeast Ores come in multiple types depending on the episodes that they can be obtained from. Each type grants a specific bonus to the player. Up to 60 Yeast Ores of any single type can be collected by a player.
Types[]
| Yeast Ore | Description | Bonus | Source (from Balloon Expeditions) |
|---|---|---|---|
 Faerie Yeast Ore |
Traverse through Ep. 1 and 2 in Beast-Yeast on the Bear Jelly Balloon to obtain a piece of this rare ore and add an extra slot to your storage. It is said that there are only 60 pieces out there in the world! | Storage Cells +1 (60 max) | Secrets of the Silver Kingdom & Theater of Lies |
 Apathy Yeast Ore |
Traverse through Ep. 3 and 4 in Beast-Yeast on the Bear Jelly Balloon to obtain a piece of this rare ore and add 5 extra slots to your Beascuit storage. It is said that there are only 60 pieces out there in the world! | Beascuit Storage Cells +5 (300 max) | The Awakening of White Apathy & Dark Resolution's Glorious Return |
 Destruction Yeast Ore |
Traverse through Ep. 5 and 6 of Beast-Yeast on the Bear Jelly Balloon to obtain a piece of this rare ore and add 5 extra slots to your Beascuit Storage. It is said that there are only 60 pieces out in the world! | Beascuit Storage Cells +5 (300 max) | Shadow of the Destroyer & Wings of Eternity |
 Deceit Yeast Ore |
Traverse through Ep. 7 and 8 of Beast-Yeast on the Bear Jelly Balloon to obtain a piece of this rare ore and increase the amount of obtainable Rainbow Pearls at the Trade Harbor by 0.5%. It is said that there are only 60 pieces out in the world! | +0.5% Rainbow Pearls from Trade Harbor (+30% max) | Spire of Shadows & Beacon of Truth |
| File:Sloth Yeast Ore.pngSloth Yeast Ore | Traverse through Ep. 9 and 10 of Beast-Yeast on the Bear Jelly Balloon to obtain a piece of this rare ore and speed up Agar Cube melting by 0.5%. It is said that there are only 60 pieces out in the world! | +0.5% Agar Cube melting speed (+30% max) | Garden of Sweet Delights & Battlefield of Passion |
| File:Silence Yeast Ore.pngSilence Yeast Ore | Traverse through Ep. 11 and 12 of Beast-Yeast on the Bear Jelly Balloon to obtain a piece of this rare ore and speed up researching new technologies at the Sugar Gnome Laboratory by 0.5%. It is said that there are only 60 pieces out in the world! | +0.5% Sugar Gnome Laboratory research speed (+30% max) | Silence of Conviction |
Limited[]
| Yeast Ore | Description | Bonus | Source |
|---|---|---|---|
 4th Anniversary Yeast Ore |
A rare ore purchased from the 4th Anniversary Shop. These are so rare, there are only 32 pieces available for sale. Each piece of ore adds an extra slot to your storage. | Storage Cells +1 (32 max) | 4th Anniversary Festival |