Mine is all portable at this point but has evolved into an actual system. I should have taken a pic when I brewed last Saturday because it'll be the last time I use it in the current configuration...we're moving and the new place will have room to set it up semi-permanently.
Anyway, it consists of 210k BTU banjo burner, 30 quart pot for mashing (BIAB) and boiling, Smaller pots for heating strike/sparge water and a bottling bucket with a false bottom (conveniently sized rice steamer basket) doubles a lauter tun.
I heat the strike in the main pot and drop the bag in, get it settled, take it off the burner and wrap it in a Reflectix jacket to mash. If I'm using protein rest, I'll boil water in my 4-gallon bot for subsequent infusions and mashout.
After mashout, I transfer the bag to the bucket, settle the grain bed and transfer the wort back onto the grain, and start catching wort back into the big pot.
When all the first runnings are in the bucket, I start the sparge, pouring a couple of quarts at a time through a colander to break up the flow and not disturb the grain.
When I write it all out, it seems a little slow and stupid, but aside from the hassle of dipping and pouring the wort and sparge through the bucket, it really is a pretty clean system. It's been giving me over 80 percent efficiency very consistently and has resulted in some very good beer.

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