I've been experimenting a lot with the V60 and Chemex lately to find a technique that makes the most scientific sense.
I find that everybody has a different technique and method for pourovers, but none of them can break down every movement. They just do it, because 1) it's the way they were taught and/or 2) it simply "works" for them.
I have a couple technical questions... forgive me if my thoughts come off scrambled and disorganized.
What do you think of pouring on the outside of the grinds? On one hand, this can cause channeling. On the other hand, the grinds on the outside simply don't get the same extraction as the grinds in the middle, because it's the first to surface during the drawdown.
Pouring down the outside of the grinds, promotes mudslides, avalanches, bottlenecking, whatever you wanna call it. In other words, once all the water draws down, the grinds are gonna be flat and clogged, as opposed to an inverted cone shape.
People seem to have negative things to say about clogging the filter, because it can slow down the drawdown phase and overextract the grinds.
I had the opportunity to train with Stumptown recently, and the rep actually sought out a flat coffee bed, upon completion of the pourover. His reasoning was that you wanna extract the water through a bed of coffee a la espresso.
I could see some merit in his argument. It seems to be the only way to ensure that all grinds are extracted, as opposed to when you have grinds that draw down as an inverted cone, some grinds are inevitably left high and dry.
That said, I'm sure the flat bed of coffee grinds is not gonna be ideal for a cone shaped filter, not only because it goes against the shape of the cone, but because everytime you pour near the filter walls, you're gonna get some side channeling.
I think the flat bed of coffee grinds would be awesome for the kalita wave dripper, which on a scientific level, kicks the V60's ass. From the rippled filters that discourage side channeling, to the flat bottom, it makes a whole lot of sense. But I haven't used the kalita wave dripper yet, and the cafe I work at only features the V60 and Chem for pourovers right now, so I'm just focused on dialing in a scientifically sound technique.
Either drawdown (flat bed vs inverted cone) seems to have its own pros/cons. In the end, it seems like the cone filter is a flawed design from the getgo. I guess my question is, which seems to be the lesser of the evils? And why?