This is an unofficial fan guide. Seasonal spawns and shop stock can change; verify the item in your current save before planning a recipe.
Fields of Mistria Water Chestnut is reported by the community wiki as a forageable ingredient near Errol's Cabin in the Narrows during spring, summer, and fall. The same source says it can be bought from Balor's Wagon when it appears in that rotating stock. It is used in milling and cooking recipes, so it is worth collecting when you see it instead of treating it only as a low-value sale item. Current spawn positions and wagon availability are To be confirmed in your game version.
Where to find Water Chestnuts
The collected Water Chestnut page places the forageable resource along the water near Errol's Cabin in the Narrows. Its listed seasons are spring, summer, and fall, which means winter is not included in that source's foraging window. The page gives a listed sell price of 5t, but it does not make a claim that selling is the best use. Check the shoreline in your current save because patches can change a spawn or its presentation.
Balor's Wagon option
The same community record lists Balor's Wagon as a rotating-stock purchase for 25t. Rotating stock is not a promise that the item will be present on a given day, so do not plan a recipe around a guaranteed purchase. The collected record does not establish a fixed wagon schedule, stock probability, or purchase limit. Those details are To be confirmed from the current in-game shop.
Cooking and gifting context
Water Chestnut appears in the collected recipe table for Fried Rice, which also lists rice, chicken egg, carrot, peas, and soy sauce. The source also records March as disliking Water Chestnut, so it is not a safe default gift for him. That does not prove every other character's preference, and a single item should never be treated as a universally good gift. Use a current gift guide before handing over a rare ingredient.
A careful collection routine
When you are traveling through the Narrows in a listed season, check the water-side forage route before buying extra ingredients. Keep the item for a known recipe or a requested quest only after checking the required materials in your own menu. If the item is absent, do not infer that the season table is wrong: it may be a timing, spawn, or version difference. The exact respawn pattern is To be confirmed.
Sources
This page uses the collected Fields of Mistria Wiki Water Chestnut entry, a community-maintained source captured on August 12, 2026. It is not an official NPC Studio item database. The location, seasons, price, recipe, and gift note above are attributed to that record. Verify current behavior in-game before committing rare resources.