I don't want to derail the thread - is it okay to ask about this after market shower head in general? If not, feel free it ignore everything below
I have no problem with whatever direction the thread goes, if it's helpful to the community.
mbenedet wrote:I wonder if the temperature loss is from the extra holes as well. Does anyone have any comments on the speed of brewing? Does the water dispensing rate speed up with the extra holes or is that a function of how fast the machine heats up the water?
I'm able to achieve 21% extraction, 1.35% TDS with 58 grams coffee/1000 grams water ground on 10 with an EK43. To do this, however, I have to stir the slurry two times. My biggest disappointment with the machine is that the shower head is very plainly not over the center of the bed (I assume for better access for stirring).
I think the open top brew basket is more to blame for the temperature loss. However, I don't think it's out of the question that the smaller streams of water with less thermal mass coming out of the smaller holes are cooled by the air more readily as they fall to the slurry below. Pure speculation on my part, but I figured creating a cover for the basket wouldn't be a bad thing for temperature loss/stability.
I've found my brew time (time from first water coming out of the shower head until the coffee bed starts dripping instead of being a stream) for a 1-liter brew is about 5:45.
BTW Measuring TDS itself isn't enough, you need a proper refractometer and also weigh the final beverages
Totally agree. I wouldn't be opposed to shipping this showerhead out to someone in the US with a refractometer so that they can run a more proper test of the efficacy of this aftermarket showerhead.