One of the Canning Machines looks a little like a liquid transposer. I put a lava cell in (still a little disappointed about not getting the cell back), and lava went into the tank on the right.
How do I get the lava out? It appears that I can only store liquids in cells if the liquid comes from the left tank, but my experiment shows that extracting from a cell puts liquid in the right tank.
What gives? What is this machine even for?