Slop in the fermenter question

[jon1163]

I'm new to the thumper game. I've ran mine once or twice but only with clear Mash in both upper and a boiler. I have a 15 gallon keg boiler and an 8 gallon keg Thumper.

So let's say I have it all grain honey bear bourbon fermenting. I squeeze all the grains and then I have the mash settle. Usually what I do is charge but the boiler in the thumper with the beer. But I've heard that people put slop in the thumper.

Is the slop spent and squeezed grains mixed with a little beer or is it just that people siphon the beer off the top of the fermenter for the boiler charge and then scoop the slop, yeast and all, and charge the thumper? What's the consistency of the slop in the thumper? Oatmeal? chicken soup?