Here are the raw beans (Colombian), and 5 and 15 minute roasts (125c). Both roasts were over, with dark nibs and most of the aromatics gone. I've never had such dark nibs from such a short roast. Grateful for your comments.
Stale beans? Or is 5 minutes sometimes too long to roast?
Got some new beans from a batch due to expire in mid April. 15 minutes was too long. Even 5 minutes produces dark nibs.