Why iStill Boilers are Square instead of Round!

Our patented flush square boilers bring amazing advantages to the craft distilling industry:

  • Counters vortex formation, which results in much better mixing, allowing for:
  • On the grain distilling for 20% more flavor;
  • Direct heating;
  • Maillard Reaction for another 25% more flavor;
  • Higher net boiler capacity (+20%);
  • Stable gas bed above the liquids;
  • Resulting in more stable vapor speeds inside the column;
  • For more control over cuts and flavor composition.

A video to prove our points? Here you go (flush square jar to the right, round one to the left) …


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