40 Quart Stock Pot and cover by Update International. NSF listed.  Stainless Steel Construction.  3 ply bottom consisting of 2 layers of stainless surrounding a 5 mm thick aluminum core.  Riveted handles.  Induction ready.  40 quart/10 gallon capacity.

Update International (SPS-40) 40 Qt Induction Ready Stainless Steel Stock Pot w/Cover

Also: Induction Heat Sources for Home Brewing via Brew Your Own Magazine