Thing is having fresh/quality coffee and balanced water is absolute key to making progress. I read quite often of those starting espresso and they try with stale coffee to save $ while 'dialing in' and it's really a waste of time/effort as freshness is the ultimate variable to control and keep in check. Comparing fresh to stale affects not only taste/texture, but also technique as well.
I agree. I am only trying to 'use up' the bag I purchased, and at the same time, experimenting with the brew before buying better beans.
That said, I made an interesting discovery this morning.
My brew had been tasting pretty bad; strong, very bitter, and no flavor. I have been pretty much blaming the poor quality beans. After all, I did buy a 2.5 lb bag at BJ's for only $12.
I have been using a Cusinart DBM-8 (flat) burr grinder. Certainly not a quality grinder, but I'm not ready to spend $100+ on a grinder just yet.
I started out setting the grinder halfway between medium and the coarsest setting.
I have been adjusting the steep timing, blooming, and coffee to water ratio (only slightly). Mostly I was using a 1:14 ratio.
I found that blooming did nothing for me. I suppose it has to do with the freshness (or lack thereof) the beans. No point in blooming when the beans have already finished outgassing CO2.
My first brew was steeped for 5 mins. There was more flavor than when I reduced steep time, but the coffee was still pretty bitter.
From all the info I had gleaned online, I thought I was over-extracting. So I reduced steep time to 4 min, then 3 min. Still no flavor and lots of bitterness.
Then, yesterday I read something online about using a finer grind; Maybe it was James Hoffman who said he uses a medium rather than coarse grind. I had tried his 10 minute method but used a coarse grind, and was not happy with the result.
But I got to thinking that perhaps the coarse grind is not allowing enough of the flavor to be extracted before the bitterness is extracted.
So for this morning's cup, I set the grinder to medium. I left the ratio alone (1.2 oz coffee to 16 oz water).
I pre-heated the pot with hot water (from the tap), waited 30 secs after removing the boiled water from the heat, and poured the entire amount of water at once (no bloom).
I stirred, and started a count-up timer. My plan was to take a sip at 2:00, and another at 2:30.
At 2:00, the brew was too weak.
At 2:30, I decided to let it go to 3:00.
At 3:00, I plunged, but only until I started to feel resistance - not all the way down.
The coffee has more flavor and is less bitter than previously.
The only difference between yesterday's flavorless, bitter cup and today's better one was the setting of the grinder from coarse to medium.
Why does a finer grind produce more flavor and less bitterness, when all I have read tells me otherwise? Here is my theory:
It's not the bitterness that was the problem; it was the lack of flavor.
3 minutes shouldn't be long enough to extract too much bitterness, but it may not be enough to extract the flavor. If steep time is increased to 4 or 5 minutes, more flavor may be extracted, but more bitterness will also be extracted.
Going to a finer grind allowed more flavor to be extracted without increasing bitterness, thus a better cup of coffee.
It is not unlike my experience with drinking IPA beers.
While most IPA's are more bitter than other types of beer, I have found that a beer with a higher IBU (International Bitterness Unit) is not necessarily the one that tastes the most bitter. In my experience with IPA's, flavor trumps bitterness, if one is to believe the IBU is a standard measure.
Perhaps this is an individual taste phenomena. It would explain the varied brewing methods used for various types of systems. One size does not fit all.
I will not be at all surprised if I get completely different results with higher quality beans, so I will keep an open mind, not stick with whatever values I used for my current batch of beans.
I may also invest in a better grinder for more consistent results.
Oh, BTW; Using the finer grind does produce some silt in the cup, but it doesn't bother me. I am happy to accept a little silt if I get more flavor.