Latest Posts

  1. Q & A: Dry Fermenting?

    Q & A: Dry Fermenting?

    We kick off our Q & A with a customer question about fermentation!

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  2. Coffee Roasting Basics: Nerd Nite Silicon Valley 6/25

    Coffee Roasting Basics: Nerd Nite Silicon Valley 6/25

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  3. Espresso Basics & More

    Espresso Basics & More

    Sign up for our espresso basics class

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  4. Video: Sample Roasting with an Aillio Bullet R1

    Video: Sample Roasting with an Aillio Bullet R1

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  5. Video: Larry Cotton's Sifter Coffee Roaster

    Video: Larry Cotton's Sifter Coffee Roaster

    Sweet Maria's Customer Larry Cotton blows our mind again

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  6. Video: Dry Process Coffee & Quakers

    Video: Dry Process Coffee & Quakers

    How we grade for the quality of our dry process coffees

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  7. New Postcards. Quakers: Resistant to Roast

    New Postcards. Quakers: Resistant to Roast

    Our new postcards. Look for one in your next order.

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  8. Bullet R1 Roaster Meet Up

    Bullet R1 Roaster Meet Up

    Join us for a meet-up where we will discuss the very popular Aillio Bullet R1 coffee roaster.

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  9. Growing Coffee at Home: Repotting Plantlets

    Growing Coffee at Home: Repotting Plantlets

    The amazing roots of very small coffea arabica plants

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  10. Sweet Maria's Home Coffee Roasting Demo at The Bay Area Maker Faire

    Sweet Maria's Home Coffee Roasting Demo at The Bay Area Maker Faire

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  11. Storing Your Roasted Coffee

    Storing Your Roasted Coffee

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  12. A Path to Food-Grade Cascara at the Helsar Micro-mill

    A Path to Food-Grade Cascara at the Helsar Micro-mill

    Cascara beverages are popping up everywhere these days.

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coffee seed structure and defects

coffee seed structure and  defects
 coffea arabica - coffee plant root structure and early leaf formation layers of the coffee fruit: endosperm (the green seed/bean), endocarp, mesocarp, exocarp.
the formation of the coffee flower and then the fruit development of the green coffee bean in the cherry
black bean defect in green coffee (and parital black bean defect) sour defect (vinegar defect)
blotchy - moldy sours
floaters moldy coffee beans
transverse cut of a healthy, fully developed coffee seed/ green bean cellular "compartment" structure of a healthy green coffee bean with "full" content of proteins, lipids, etc.
closer view of cellular "compartment" structure of a healthy green coffee bean with "full" content of proteins, lipids, etc.  underdeveloped, immature coffee bean, with insufficient cellular content
closer view of the the black bean defect (microbial attack of the coffee bean) with destroyed cell content black bean defect (microbial attack of the coffee bean) with destroyed cell content

 


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