OK, so I wanted to get an all-in-one system so I could do step mashes, have a shorter brew day and have more time to myself when I brew. Grainfather was too expensive, and both the ACE and Klarstein were out of stock, so I got a Bulldog Brewer. It arrived yesterday, and I cleaned it out and did my first brew, a 20L version of
Clibits Simcoe Mild recipe.
Firstly, my unit was defective, which gave me problems down the line. It comes with two elements, a 700W element for maintaining temperature, a 1800W element for a good rolling boil, and they can be combined for quickly raising the temp to bring the strike water to temp, between mash steps, and to start the boil. My 1800W element wasn't working, which I first suspected when it took 45 mins to get to strike temperature. The 700W wouldn't go above 84C without me insulating the unit like I would a BIAB mash, and even then it was more of 'barely a simmer' than a rolling boil. Subsequently, I missed the numbers and got 25L into the fv instead of 20L I had planned. Hopefully the hop utilisation hasn't suffered too much, and it won't be full of DMS. After brewing I tested it by trying to heat up some water just using the 1800W element, and nothing happened. Nevertheless, I do like it, and if I can get the unit fixed or replaced by Hambleton Bard, then I'll be more than happy to stick with it.
Preparation: Washing and rinsing the kit for first time use was easy, and everything was pretty self-explanatory to set up. Despite being slow, bringing the water to strike temperature was easy compared to my peco, where I would have to lean over the kettle, glasses steamed up, at the right time with a thermometer. The electronic interface is very simple and intuitive. I had set my grain mill to 1.2mm, to make sure that the crush wasn't too fine, so that the recirculation didn't draw in the grain bed, and to give me an easy time with the sparge. This has the other advantage that doughing in was easy, especially with the recirculation on, with no dough balls at all. The unit recommends a liquor to grist ratio of 3.0, so quite a thin mash which also helped. I had previously always sought a fine crush, for the sake of efficiency, without noticing these advantages of a coarse crush. Now that the recirculation makes efficiency not a problem, this system gets the best of both worlds.
Mash: The unit held 65C well over the 1 hour mash, and the recirculation worked perfectly despite 11.5% wheat in the grist. The pump didn't struggle at all, and the bazooka filter didn't clog. I've read that some earlier models had a weaker pump PSU and a shorter bazooka which caused problems, but the longer and finer mesh and the higher power supply meant the pump had no problem at all. Raising the temp to 72C for mash-out was very easy, just press a button and walk away. It took 10 mins to raise with the 700W element, but I imagine it would be a lot quicker if the 1800W was working. Overall, this stage was easier than with the peco; I did stir the mash halfway through, but I didn't have to unwrap a load of insulation to do it. During the mash I used the sparge plate to redistribute the wort as it came through the return pipe. I can imagine that otherwise the flow might compact the grain bed.
Sparge: Other than the recirculation, lautering is where an all-in-one system really comes into its own compared to BIAB. I just lifted the malt pipe, put it on its rests (there are two levels, so you can do this in two stages if you are weak or have a large grain bill). I then added the sparge plate and poured the water on. There was no channelling, and the plate ensured that the sparge was evenly distributed over the surface of the grain bed without disturbing it. A small gripe, however, was that with a small grain bill like this one, the sparge plate can't quite be lowered enough to bring it just above the grain bed, though as far as I could tell this had no negative effect. The whole process was so much easier than BIAB. No dripping bags making a mess, and no fine-crushed grist needed to be squeezed to death. The coarse husks just allowed the sparge water to evenly, steadily and thoroughly rinse out the sugars in under 20 minutes. It was really straight forward and I could tell by tasting the spent grains that the sugar extraction was very effective. One nice thing about the Bulldog Brewer is that the pump is external, and not integrated into the unit. This means that I could have used it for continual delivery of the sparge water to the sparge plate, and this would negate the need to gravity feed, allowing the HLT and BB to be next to one another.
Boil: I can't really comment on the boil, because I didn't have one. :-(
Overall, I'm impressed by the bits that worked, and it seems that Hambleton Bard have managed to overcome the infancy niggles with the earlier models by improving the pump, sparge plate, bazooka and malt pipe mesh and handle. Almost all aspects of the brew day were easier, and I had a lot more time on my hands, and less mess to clean up at the end of the day. I'm annoyed that the 1800W element wasn't working, which mean I missed my target numbers, but I did hit 75% brewhouse efficiency which I guess isn't bad considering. Next time I will crush a little bit finer to see if that improves it without stressing the pump or compacting the grain, maybe a 1mm gap. I've contacted the vendor, who have contacted Hambleton Bard, so hopefully they can get me a fix, or repair/replace it in the next couple of weeks ready for the next brew day: a double-mashed RIS to pitch on the yeast cake of the Mild.