all grain brewing

[nactionjackson7]

I'm going to start brewing all grain instead of extract brewing here pretty soon. I was looking at the all grain systems you can purchase online and saw that they all come with two coolers, I've watched a lot of videos on all grain brewing And have yet to see someone use both coolers. My question is what the hell us that second cooler for?

 

[stevehardt]

The second cooler is is a hot liquor tun for storing heated sparge water. It is not really necessary

 

[nactionjackson7]

Thank you for the perfect answer!

 

[Bobby_M]

The reason someone would want to use a hot liquor tank cooler is to be able to fly sparge with only one burner/pot. During a 60 minute sparge, the water would cool off too fast if it were in a bucket. If you batch sparge, it's more common to collect wort into buckets and just dump the sparge water into the mash tun right out of the kettle.