Here's what I use for both homebrewing and large-volume canning:
https://www.williamsbrewing.com/HURRICANE-60000-BTU-STOVE-P2213.aspx
Unfortuantely it's $120 now
When I bought it 8 or so years ago it was half that. But it'll get 6 gallons of cold water boiling in 15-20 minutes!
You can save a bit by building your own burner stand and just buying the necessary parts:
https://www.williamsbrewing.com/10-LOW-PRESSURE-GAS-BURNER-P3714.aspx
Good luck!
https://www.williamsbrewing.com/HURRICANE-60000-BTU-STOVE-P2213.aspx
Unfortuantely it's $120 now

When I bought it 8 or so years ago it was half that. But it'll get 6 gallons of cold water boiling in 15-20 minutes!
You can save a bit by building your own burner stand and just buying the necessary parts:
https://www.williamsbrewing.com/10-LOW-PRESSURE-GAS-BURNER-P3714.aspx
Good luck!