How good of an indicator is a TDS meter for descaling? I just had an issue with my dual boiler machine, water coming out was smelling, so i decided to descale since i regularly clean my machine with backflush detergent. As I was rinsing, i had the idea of monitoring the tds of water coming out of th...

I was watching a t.v. show on fractal mathematics and one of the application they found was on cement powder fineness. here is a Google translation of what I found in French on the subject. I do wonder if it could be applicable to coffee grounds?

Thank you all for the informative contents. This bean is from a reputable vendor, it came in small jute bag, which i found kind of cute and set it aside. The problem is I forgot it... for 3 years. Now I know that beans are a perishable commodity, and that aging process of Sumatra is not about forget...

{image} Is this what mold looks like on green bean? one image is under uv light and the other is under white light. {image}

i had this issue at first, but it was corrected by dosing 17.5gr for the 18gr basket. There is now a 2mm headspace between the puck and the dispersion screen. I also use WDT to get even extraction

I am admittedly ignorant of what happens during espresso extraction, but for me grinders are very similar in operation. They are an engineering compromise that should perform the following tasks with one burr set. produce coarse particle produce small particles blend them adjust the proportion of bo...

I don't know if it would be of any interest to others, but what i would like to see is pictures of coffee particles from a spent puck. I would be interested to see what part of the ground coffee is dissolved. Maybe that would help figuring a desirable particle size to maxime extraction

I purchased a new OPV that I believe to be of better quality than the one installed in my brewtus II. Based on info I found on the net , i tried to source the proper parts. Just for reference,you can see here what I sourced (I did not purchase from them): {link} With that installed in series with

My question is probably stupid, but... i will ask anyway. Can this grinder be used for bright centrals or kenyan roasted city or city+ ? If you put a 14 gram dose in and change the grind setting at every gram, would it produce a particle distribution that is suitable for espresso extraction? if not,...

I saw a food related TV program this week that presented stevia plant as a 0 calories sweetener. Since it is a plant and does not have the same physical property of sugar, maybe it could safely be used in the pf. Did anyone tried it?