After mainpower has been restored from Gestopahts, the factory has a little power. However the steam needed for cleaning and preparing the food for shipment still has to be done. Out the back door is the controls to accomplish this. You have to move the big inverted funnel over the correct mudpit and start the water dripping. If you have the water too high, the lava pit cools and steam is minimal. You must have the drip enough to produce the maximum amount of steam. The water drips from pipe connnected to the outer flare of the inverted funnel. The inner portion of the funnel is used to suck the steam into the factory. This hot steam is used to parboil the tubers before packing and to soften the hull on the plant sac so that it can be cut. The hull is saved and used by the nujacs for wood in their fireplaces. After the sac has been softened it can be cut and the edible seeds are scooped out. These seeds can be eaten as they are, but they can also be made into a drink. I believe this will be done in the industrial part of Gestopahts. So after the nujacs remove enough seeds to sustain their population, the rest will be packed and readied for shipment.
Once the main power has been restored to Houmala, you must also turn the light at the end of the pier to face the main port of the city. The light needs to be turned on as the tide comes in and then extinguished before the tide gois out. It is only this small time frame when the ship can dock and load and unload goods and supplies.