豆の大きさが焙煎に与える影響

https://jikakobo.com/%e3%83%ad%e3%83%bc%e3%82%b9%e3%82%bf%e3%83%bc%e3%82%ba%e3%83%ac%e3%83%9d%e3%83%bc%e3%83%88%e2%85%b4_%e3%82%b3%e3%83%bc%e3%83%92%e3%83%bc%e7%84%99%e7%85%8e%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8b%e7%94%9f/