Do not assume failed Extreme Alchemy is the only reported source. Compare the safe limit, total ingredient value and active Oracle effects; the methods below are attributed guidance, not guaranteed wiki-tested drops.
Community guidance, not a v1.0.5 patch claim. We have not independently reproduced these methods in the game.
Three reported routes, different conditions
Neoseeker’s Alchemy guide describes sediment from failed Extreme Alchemy above the safe limit, from safe-range prime totals such as 2, 3, 5, 7 and 11, and from a Legend Reforged Oracle effect. It describes the card’s bonus as half of the ingredient value.
These are third-party gameplay claims, not official patch guarantees or tests performed by this wiki. In particular, do not turn “a failed extreme craft can yield sediment” into “all successful crafts yield none.”
Why copying four herbs is not enough
The same guide attributes the often-shared two- and four-sediment examples to the active card effect rather than to four ingredients alone. That is a reason to compare the whole setup before repeating a recipe, not proof that your save has that card.
Write down item quantities, total alchemy value, the displayed safe limit and all relevant Oracle effects. Different quantities or an omitted modifier can explain different results without a new patch being involved.
Check the arithmetic before spending materials
The alchemy value checker adds values you enter, identifies prime totals mathematically and compares the sum with your displayed safe limit. It does not predict a product, drop amount, success chance or card activation.
A prime-number label is a property of the total, not independent verification of Neoseeker’s game rule. Treat any test as a small comparison with ingredients you can afford to lose.
Keep a reproducible experiment
- Make a separate working save before a costly test.
- Record the game version and every input quantity.
- Record the displayed safe range and active cards.
- Note whether the actual attempt was safe or extreme, and whether it succeeded.
- Record both the product and the sediment received, including zero.
Use the recipe notebook to keep observations. A saved note is not promoted to a verified recipe automatically.
Protect the next worker or seed purchase
Before optional worker expansion, check the cost shown for your next goal. Do not spend an entire reserve on a method that depends on a card or condition you have not checked. There is no verified universal reserve amount in this guide.
The original Steam question remains linked as evidence of the bottleneck. Its complete later replies were not readable in this review; no new quote or developer answer is attributed to that thread.
Sources & further reading
Last reviewed 2026-09-29.