Duffy - single origin is a somewhat generic term simply meaning from one country. Often, you will see a mill purchase from MANY farmers within a certain region and process together, that's still considered a single origin but not a farm specific coffee. Blends typically contain coffees from more than one country, however a blend could be from the same country, but different coffees. I've only seen this in larger coffee producing countries where you have different flavor profiles. (I.E - you may have a different flavor from the coffees grown on east/west side of mountains, low areas vs. mountains, etc).
Now when it comes to labeling coffee - that's all across the board. I'm still trying to wrap my head around all the various names/regions/farms and naming nomenclature. It really comes down to the fact that every origin has unique farm/grower situations resulting in different labeling. For example, in Uganda the average farm is only 2 acres in size - mills are very limited so almost all of the coffee is coop'ed together. In that specific situation, I will label the coffee Uganda - Gibuzale based off the growing region. If the growing region and/or mill separates the incoming green by farm - that's typically when they are all called 'micro-lot's... in those situations most people will label the specific farm. In that case - I would place farm level information on the label.
Ask if you have other questions!
Mike
