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Thread: Dialling in with different beans

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    Default Dialling in with different beans

    Hi
    I'm using a DTP and newly acquired Smart Grinder Pro. I dialled in initially with Coffee Compass Mystery beans (about 25 days since roast) and got great consistency and extraction with the grinder on setting 11.
    Today I changed to HCR Workhorse (12 days old) using same variables but it choked the machine. I eventually got a decent tasting shot by reducing quantity by about a gram and increasing grind to 14.
    So can I take a basic understanding that fresher beans require coarser grinds? Is there a general rule of thumb people use to judge roast age/grind size? And just to help my brain accept this can someone explain why? Is it to do wit carbon dioxide?

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    Quote Originally Posted by jen1979 View Post
    Hi
    I'm using a DTP and newly acquired Smart Grinder Pro. I dialled in initially with Coffee Compass Mystery beans (about 25 days since roast) and got great consistency and extraction with the grinder on setting 11.
    Today I changed to HCR Workhorse (12 days old) using same variables but it choked the machine. I eventually got a decent tasting shot by reducing quantity by about a gram and increasing grind to 14.
    So can I take a basic understanding that fresher beans require coarser grinds? Is there a general rule of thumb people use to judge roast age/grind size? And just to help my brain accept this can someone explain why? Is it to do wit carbon dioxide?
    Different beans will require a different grind. Even the same bean from the same roaster may need tweeking between batches.

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    Adding to what has already been said, it gets even more confusing that even the same bean from the same batch will (likely) require a change in grind setting, the longer the bean sits around. Although freezing (IMO) can be beneficial to save a bean going stale.
    Machine - Vesuvius. Grinder - Niche. Tamper/distributor - Pullman Distribution and Big Step Palm Tamper.

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    The darkness of the roast also has an impact on grind settings. I would go as far as to say that the same batch from the same roaster may need to be tweaked depending on the ambient temperature, relative humidity etc. From experience grinder adjustments are just one of those things you need to accept when preparing espresso. Also remember when adjusting the grind settings to purge the grinder for a couple of seconds to make sure that what goes into the portafilter is at the new grind setting.
    Espresso:Rocket Cellini Evo, La Pavoni Europiccola , Grinder: Eureka Mignon,Ceado e37s Roaster: Dalian Amazon

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    I have the same set up as you and have probably tried about 10 different types of beans now from 4 days old to a couple of months and have never managed to get my Sage DTP to take anything finer than 15. Most have been up around 18, whereas grinding at setting 12 on the last lot of beans was perfect for my AeroPress.

    To answer you question, fresh coffee definitely requires a finer grind...

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    Quote Originally Posted by dunc View Post

    To answer you question, fresh coffee definitely requires a finer grind...
    I find the opposite to be true. I have to move the setting on the Niche up to 2 points finer if the beans are 25 days and over compared to less than 10. This is with all varieties and roast levels.
    Roasters : Quest M3, Gene CBR-1200 (with full power mod), Probat 5kg Brewing : Vesuvius Steel Pipework, Ponte Vecchio Lusso 2, all manual methods. Grinders : Compak E10, Mazzer Royal, Macap MC7 Deli, OE Pharos, Hausgrind, Feldgrind

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    I normally find, fresh needs finer (for 2-3 days), then coarser then finer again...through the aging cycle over 3 weeks after opening.
    ACS Vesuvius DBPP, Izzo Duetto DB, Minima DB, Lelit Bianca Prototype DB (paddle flow control) BTC Machines: Roasters: Amazon Dalian 1kg Drum Roaster, other failed roasters: Grinders: Ceado E92, Niche US and UK: 145kg assorted greens: My reviews at https://coffeeequipmentreviews.wordpress.com/

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    I suspect it varies according to the bean. Definitely coarser as they age on the bean I mostly use. Others may not be around long enough to tell and with those I am usually messing with grinder settings anyway unless I have bought them before.

    I've tried storing in the fridge and more recently airscape to see if it changes anything. My next batch is currently all in an airscape.

    John
    -
    In Use Sage DB+IMS Shower Screen, Niche. Profitec T64. Others Sage BE, Piccino. Robur,Ascaso I-1, Mazer Mini A, Ceado 37J
    Too many filter baskets - maybe

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