Latest Posts

  1. 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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  2. 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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  3. 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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  4. 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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  5. 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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  6. How to roast your own coffee

    How to roast your own coffee

    Home coffee roasting is as fun and easy (or as exacting and technical), as you want to make it. Whatever method you use, you will be on your way to drinking much better coffee.

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  7. Prop 65 Explained

    Prop 65 Explained

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  8. Fundamentals: Roasting Dry Processed Coffees

    Fundamentals: Roasting Dry Processed Coffees

    Dry processed coffees are becoming fruitier and fruitier.

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  9. How Can a Leaf Rust?  Roya in Guatemala

    How Can a Leaf Rust? Roya in Guatemala

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  10. Here's what first crack looks like

    Here's what first crack looks like

    It's hard to see the actual crack happen when you are properly roasting coffee and your beans are rapidly moving around inside of your roaster.

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  11. Coffee Research – What is next?

    Coffee Research – What is next?

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  12. Tweaking Coffee's Flavor Chemistry

    Tweaking Coffee's Flavor Chemistry

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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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