Anyone else have trouble with blends that settle in the bag? If you ground enough for half a dozen cups at a time, it wouldn't be a problem, but grinding one cup at a time it is.
What am I talking about? I'm drinking a shot of a blend. 40:30:20:10 - Cach:Mandh:CR Tres Rios:Lupili. Mmmm! This shot tastes quite balanced - although the CR and Zamb dominate slightly. Other shots I've drunk from the same batch have more Cach and Mandh in them, but not much brightness. I can only conclude that the beans have settled in my one-way valve bag, and some grinds contain more of one constituent and other grinds more of another.
I imagine this could also be a problem when I roast pre-blended greens - HB Premium for example. (Do I get the same mix out of my 2kg bag each time?) It could even be a problem when someone like Steve sells greens he buys blended, like Daterra or Perfeito - could the different greens sort themselves in the storage bin?
When I fancy 5% robusta in a blend, I keep a small stock of pan-roasted robusta and add 4 beans per shot to avoid exactly this problem. But even with pure arabica blends I'm getting quite a lot of cup variation which I think is down to this happening. I'm guessing it's most pronounced when the beans are different sizes, so that peaberry in a blend would tend to fall to the bottom. (Not a Kenyan peaberry, of course )
Anyone else had this happen? Solved it? Or am I making it up? Or do I need to post-blend one cup at a time ?
TTFN, James