Fermentation Guide

If your colony is still living off basic crops and you want a steadier path to better food, the Fermenter is the first processing step to build around. It is available from the start, but it only pays off once you have power and a reliable upstream supply chain, so the key is to build it early enough to be ready, but not so early that it sits idle and drains your attention. Start by understanding what it needs, then pick the recipe you can actually feed, and only after that expand the production chain.

Build your first Fermenter as soon as you can support power

The Fermenter is the first food-processing building available to your colony, and it is unlocked at the start of the game. You can construct it using only Logs, which makes it easy to place as soon as your early lumber production is stable. The catch is that the Fermenter requires electrical Power to operate, so do not treat it as a self-contained food source. It is an early infrastructure choice: useful to establish, dangerous to depend on before your electrical network is online.

When you are planning your first food upgrades, think in terms of support systems. If you already have power generation and wiring in place, build the Fermenter early so it can begin turning crops into fermented food products. If your power grid is still pending, hold off on depending on fermentation for food security.

Use that table as your quick reference, but plan the chain before you place the building. The right choice is usually the one you can keep fed continuously, not the one that looks strongest on paper.

Pick the fermented food you can actually feed

Your first decision is which recipe to support. Fermented Cassava is the most straightforward option because it only depends on Cassava grown and harvested by Farmhouses. If your farming network is already focused on crop fields and you want a simple upgrade path, start here.

Fermented Soybean is the middle step. It depends on Soybean from Farmhouses, and it can also require Canola Oil as an intermediate ingredient. That means your chain may need Canola grown by Farmhouses, Canola Seeds harvested, and then an Oil Press to turn those seeds into Canola Oil. If you choose this route, plan for the extra building and the extra handling from the beginning. Do not assume the Fermenter alone will solve food production; in this chain, the Oil Press is part of the food plan.

Fermented Mushroom is the specialized option. It depends on Mushroom production from Hydroponic Gardens, so it is not a simple field-to-building path like Cassava or Soybean. If you do not already have hydroponic infrastructure, this is the one to postpone until your colony has the materials and water to support it.

The practical rule is simple: choose the chain you can already sustain. Cassava is the safest first step, Soybean is the next step once you can afford processing, and Mushroom is the advanced option once your infrastructure is mature.

Set up the supply chain before you expect steady output

Do not build around the Fermenter first and hope the inputs appear later. Build the upstream producers first, then add the Fermenter once crops are moving steadily. Farmhouses are the primary upstream producers for Cassava and Soybean, so make sure you have enough farmland, seeds, and workers to keep them productive. If your crop fields are undersupplied, the Fermenter will simply sit and wait.

If you are aiming for Fermented Soybean, treat the Canola and Oil Press route as part of the chain from day one. Canola Seeds do not become Canola Oil on their own; you need the Oil Press to finish that step. This is where many colonies slow down, because they place the Fermenter before they have enough crop production to feed both the Fermenter and the intermediate processing building. Build the crop side first, then the Oil Press, then the Fermenter.

For Fermented Mushroom, the upstream requirement is even stricter. Hydroponic Gardens are required to supply mushrooms for the Fermenter, and that means you are building a separate production system rather than a simple farm extension. If you want this path, make sure you have the logistics to support it before you commit.

Solve the bottlenecks that make fermentation stall

When fermentation stops, it is usually because one part of the chain has failed. Start your troubleshooting at the Fermenter, then work backward. Check power first, because the building needs electrical Power to operate. If power is missing, the rest of the chain does not matter.

Next, check the input crop. If you are making Fermented Cassava or Fermented Soybean, make sure your Farmhouses are actually planting and harvesting the right crop. If you are making Fermented Soybean and your chain includes Canola Oil, verify that the Oil Press is running and that Canola Seeds are reaching it. If you are making Fermented Mushroom, check whether the Hydroponic Gardens are producing mushrooms at all.

Also remember that some of the supporting buildings cost more than your basic farm structures. The Canola and Oil Press chain, and some agricultural buildings, call for Planks and Gears as additional construction materials. Hydroponic Gardens and their related infrastructure require Metal Blocks and Water in addition to other standard construction materials. If your colony is missing those materials, your food plan will stall even if the crop itself looks ready.

The good habit here is to inspect the whole chain in reverse order: output, then processing, then raw input, then power, then construction support. That approach catches the real bottleneck quickly.

Scale the right chain and avoid overbuilding the wrong one

Fermented Mushroom production is resource-intensive, so do not jump into it unless your colony is ready for the expense. It takes eight Hydroponic Gardens to supply one Fermenter producing Fermented Mushrooms, which makes this the most infrastructure-heavy route by far. That is a serious commitment in building slots, materials, water, and labor.

Before you expand mushroom fermentation, make sure you can cover the extra building costs. Planks, Gears, and Metal Blocks all matter as you scale fermentation-related infrastructure, and water needs become part of the equation as soon as Hydroponic Gardens enter the picture. If any of those are tight, your colony will spend more time constructing and repairing the chain than benefiting from it.

For most colonies, the smart path is to start with the simpler crop-based chains. Get Fermented Cassava working first if you want the cleanest setup. Move to Fermented Soybean once you can support the additional processing. Leave Fermented Mushroom for later, when your materials, water, and workforce can handle the burden without weakening the rest of your settlement.

The Fermenter is small, but it is central to a healthy food network. Used well, it turns ordinary crop production into a reliable supply of fermented food products. Used too early, it becomes another building waiting on a chain that does not yet exist. Build the upstream production first, connect power, and only then let the Fermenter do its job.