Does very fresh coffee produce more fines?

Does very fresh coffee produce more fines?

minimum dose size?

I use the Hario switch to brew my coffee and am trying to reduce my caffeine consumption. Hence I would like to brew smaller cups of coffee. I am currently using 10g of coffee with 160g of water. (1:16 Ratio) I am wondering if there is a minimum amount of coffee...

Does very fresh coffee produce more fines?

I ordered coffee last week. It roasted and shipped on Monday and arrived today, so it's only three days after roast. I decided to give it a try using the setting I had been using for my previous coffee (Starbucks Veranda Blend from the supermarket, which was definitely not fresh but brewed a decent and consistent cup). A visual inspection of the grind size looked about right for what I normally use in my V60 with the 4:6 method. I would call it medium-coarse. However, when I brewed it, the drawdown time was very long, and though the overall taste was okay, it had a bitter and astringent aftertaste, the really unpleasant kind that lingers for a long time.

I decided to make another cup, adjusting my grind coarser. This time the average grind size looked way too coarse, like boulders, but I figured I'd try anyway. The drawdown time was slightly shorter than the first cup but still fairly long, and the cup came out definitely underextracted and sour, but still with that strong bitter aftertaste. I dumped it (and most of the first cup too, by the way).

So my question is as the title states, does very fresh coffee produce more fines? My hypothesis is that even though the average particle size appears okay or even too coarse, there must be a lot of fines clogging the brew and causing the long draw downs and bitter aftertaste. Is this a known effect, and should I just wait a few days before trying to brew any more of this? Maybe my grinder is just not good enough? By the way, the coffee is Fast Forward from Counter Culture.

submitted by /u/montagdude87
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