The Cask is a type of equipment used to make artisan goods in Stardew Valley. It takes wine and cheese and can age them to increase their quality and value.
A pickaxe can be used to remove artisan goods from a cask at any stage of fermentation.
Casks are able to produce items with "iridium star" quality. Iridium star is the highest level of quality, which doubles the value of an item. Different types of items take longer or slower to age. Wine takes the longest -- 2 seasons of aging to go from basic wine to iridium quality wine.
Casks can be placed anywhere, however they will only accept goods to refine if they are actually in the cellar.
You start with 33 Casks. It's possible to place 189 Casks in the Cellar, requiring 156 Hardwood and 3120 Wood. In order to use all 189 casks, the player must fill the casks all at once, placing additional casks as they move towards the exit. The 125 cask layout pictured below is a good place to start. In order to harvest the finished product the player will need to carve a path through the casks as they empty them. This can be time-consuming so it is recommended to do this only with a valuable product that takes a long time to reach iridium quality, such as starfruit wine.
||Use in the cellar to age products like wine and cheese.
|| Wood (20) Hardwood (1)
||Cellar farmhouse upgrade
A fully filled cellar with processing goods of different stages.
Optimal layout: 125 accessible casks.
Cellar filled with the maximum 189 casks, all in use.
Striking a Cask using a pickaxe when the item's quality has reached its peak will crash the game.