Making caviar in Stardew Valley requires a few more steps than it might seem. Creating this artisan good requires a specific type of fish and a preserved jar. Similar to other artisan goods in Stardew Valley, caviar is worth more than the product it’s made from, and it has other uses as well, like being a popular gift. Caviar is also used for the movie theater bundle, which is unlocked after completing one of the main storylines.
How to make caviar
Sturgeon in a fish pond have a chance to produce roe every day.
Caviar is made by putting sturgeon roe in a preserves jar. While you can age any roe you obtain in a preserves jar, only sturgeon roe turns into caviar. There are two ways to obtain sturgeon roe, only one of which consistently produces it.
The first method is to put a sturgeon into a fish pond, where it will produce sturgeon roe semi-regularly. To build a fishing pond, you need to take 200 stones, 5 seaweed, 5 green algae, and 5,000G to the Carpenter, who will take three days to build the fish pond. After that you need to catch a sturgeon, which are only available during summer and winter. Place the sturgeon into the pond.