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Thread: Using AeroPress and a new grinder - Taste is bitter

  1. #1
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    Using AeroPress and a new grinder - Taste is bitter

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi all,

    I've been using AeroPress for about 2 years now, without really getting involved in recipes, beans to water ratio and timing it all.
    Lately, I have gone a bit in depth with getting freshly roasted beans and storing them correctly.
    I got more into AeroPress recipes and trying to get consistent results.
    I even got a gooseneck kettle with a thermometer.

    Here's what changed:
    1. I had an Aldi Sterling grinder (before I knew about the importance of good grinders).
    2. Last week I bought a new Breville Smart Grinder Pro for $160 from BingLee.
    3. With the BSMG I get bitter taste coffee. With the Aldi grinder that I now use in the office, I get a bit better results, same beans (medium roast) as I use at home and same recipe.

    I use 18g beans and 200ml water at 85deg and sometimes at 80deg with paper filter.
    I pour 36g of water and stir them to get them saturated and let it sit for 30 seconds.
    I then pour the rest of the water, stir a bit more and then press it with the AeroPress.

    So I think this is something to do with the BSMG grinder that I'm not getting right, or is it something else.
    I hope someone here can guide me to try different ways to avoid that bitter taste.

  2. #2
    Senior Member Erimus's Avatar
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    Looks like you're grinding to fine and over extracting, if you're already on the coarsed setting well that's it. The Breville is designed for espresso, although some say it's a full range grinder, I don't believe it is.

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    Quote Originally Posted by Erimus View Post
    Looks like you're grinding to fine and over extracting, if you're already on the coarsed setting well that's it. The Breville is designed for espresso, although some say it's a full range grinder, I don't believe it is.
    On the Breville, I use grind setting of 30, if that means anything to you. This is the coarse edge of espresso. The top burr is factory default set to 6.
    By extracting too much, you mean the grounded beans are too much time in water?

  4. #4
    Senior Member Erimus's Avatar
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    Grind coarser then. The ideal setting will probably be somewhere near the maximum setting for coarseness. You'll
    just have to experiment. A good guide will be the feel of the coffee from your other grinder and your taste buds.

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    Quote Originally Posted by Erimus View Post
    Grind coarser then. The ideal setting will probably be somewhere near the maximum setting for coarseness. You'll
    just have to experiment. A good guide will be the feel of the coffee from your other grinder and your taste buds.
    I have tried that, however, when I did so, the upper burr was set to 1 (finest) by me.
    So I'll try it again tomorrow with say grinder set to 50 (out of 60) when the upper burr is set to the factory default of 6 (out of 10 options where 10 is the most coarse setting)

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    Get a kilo of Aldi beans and run them through the new grinder.

  7. #7
    Senior Member woodhouse's Avatar
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    i do the same thing with the aeropress for a concentrate. 80c water, 20g dose, 80g water (to account for the coffee absorbing water) which gives me around 35-45g yield. stir for ten seconds, plunge immediately, don't wait. coarser side of espresso, as you said.

  8. #8
    Senior Member simonsk8r's Avatar
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    Yep agree with previous replies, sounds like you're overextracting. Yeah when the particles are much finer they have a far greater surface area coming into contact with water, and it extracts much much faster. It then extracts the stuff you don't necessarily want in your drink!

    Definitely go coarser, or if you can't go any coarser shorten the brew time so it doesn't overextract.

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    What's the easiest hacky way to filter the fines from the coarse?
    I can't afford top quality coffee grinder.

  10. #10
    Senior Member Erimus's Avatar
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    Enjoy!


  11. #11
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    Behmor Brazen - $249 - Free Freight
    Not that cheap
    Quote Originally Posted by Erimus View Post
    Enjoy!




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