Yup, that is why I was asking the question about these machines, such as the grainfather. I had heard somewhere that they may not get to a “rolling boil”. I would like to see one in operation out of curiousity.
I already set my son up with equipment to do small batches , 1-2 gal is what he wants to do. Got him a small brewtech 5 gal kettle, false bottom, brew bag, 3 gal brew bucket fermenter, and an induction burner he can put next to the window with a fan sucking the steam out.
These machines are interesting if you have the ability to design your own recipe otherwise I wiould just go buy some beer.
Maybe brulosohy has done a side by side comparison of beers brewed conventionally verses through a grainfather type method. That would be interesting to read.