So, my co-brewers and I are in the process of upgrading our 5-gallon all-grain system to a system capable of producing a 1/2 barrel (15.5g) of finished beer. We just found a 25g all stainless Italian kettle on the used market, but its obviously much too large for the kitchen range that we were using. We're hoping to upgrade to an outdoor propane burner.
Do you have any recommendations for burners powerful enough to bring 20g or so of wort to a full boil? Any advice would be appreciated, as I know nothing about burners.