les24preludes Digging further into the design of these Cafecs I found that the T90 holds up the oils in the beans the most. So my interpretation is that this is what is making the difference. Almost all the feedback on the Cafecs refer to draw down times and fines, but I rarely see oils mentioned.
Can anyone comment on this? It seems to be a different way of looking at filter papers.
Filter papers generally remove the vast majority of the oils, as well as smaller, bittering particles of bean.
Coffee oils/lipids do not dissolve into the drink & are not considered contributors to coffee extraction, only the soluble solids are. When you get a lot of oils in coffee it mostly contributes to mouthfeel, but in terms of flavour, coffee oil is pretty generic, bitter, bileous and, well, ….oily.
I seem to recall the Scandinavians doing some research of filtered coffee vs their traditional coffee kettle immersions, paper filtered coffee reducing the oils by about 90-95%