What Gives?

House Blend

New member
Dec 18, 2005
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I am new to coffee roasting and out of curiousity I walked up the Bulk Coffee Bean aisle at our local ALbertsons and lo and behold I peer into the a bulk container of light roast and medium roast Mill Stone. Both the roast had flecks of oil showing on the outer shell of the bean. Reading from one of the most reliable websites with tons of information on roasting there in a picture shows flecks of oil when beans reach "Full City +". It seems like almost any roast can exhibit flecks of oil on outer shell?