Preservative
Preservative is an alchemy result with three green runes. In the full game it is the base of the embalming fluids for corpses, which are made at the Formulation Bench; the demo cannot build that bench, so there the Preservative has no use beyond the mix itself: 3 green tech points and progress toward the Alchemist inspiration.
At the Laboratory I it takes two ingredients: Flour or an Onion (two green) with one Water, Leaf or Berry (one green).
How to obtain
Mix
Runes 3 ·Crafted at Laboratory I
| Ingredient |
|---|
 Alchemic Powder  |
 Pumpkin |
 Fragrance |
70 ingredient combinations reach these runes — see how mixing works →
Other sources, not in the demo (3)
Traders
| Name | Tier | Stock |
|---|---|---|
| Alchemist · town building — build it first | All tiers | 10 |
Used for
Study
| Study requires: | Tech points | Duration |
|---|---|---|
| Science ×10 | 202010 | 6 ( Researcher −2 ) |
Each item is studied once, on the Study Table. Studying does not use the item up. With the Scientist perk, a 30% chance of a Story.
Other uses, not in the demo (4)
Ingredient for
| Workbench | Ingredients | Outputs | Mastery | Duration | Tech points |
|---|---|---|---|---|---|
| Formulation Bench |  Alcohol ×1  Preservative ×1 |  6 | 8 | 11 | |
| Formulation Bench | Alcohol ×1 Preservative ×1  Comet's Tail ×1 | 8 | 12 | 12 | |
| Formulation Bench |  Melted Fat ×1 Preservative ×1 | 6 | 8 | 11 | |
| Formulation Bench | Melted Fat ×1 Preservative ×1 Comet's Tail ×1 | 8 | 12 | 12 |
Notes
- Three Waters would do, but Laboratory I has only two slots. A Pumpkin alone would also work; the demo has none.
- The town Alchemist sells it in the full game.
- Studying it costs 10 Science and gives 20 red, 20 green and 10 blue.