Stale beans? Or is 5 minutes sometimes too long to roast?

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.


Archived Comments

Comment by: Limpopolondon
Ill try a 100c roast tomorrow

Comment by: Limpopolondon

Here are the raw beans. These were bought from HB Ingredients in UK, knowingly with a short use-by date, for experimenting


Comment by: DiscoverChoc
@Limpopolondon –

I have never heard of an expiration date on beans. Who from/Where did you buy them? Can you post photos of an unroasted bean – whole and cut in half? I have never run into the situation where beans essentially burnt at that temperature at that length of time. What happens when you roast at 100C?


Comment by: Limpopolondon
Domestic fan oven preheated to 125c. There’s a best before date on these beans, which are in 10kg bags for small batches

Comment by: DiscoverChoc
@Limpopolondon –

What kind of roaster are you using?
Also – why is there an expiration date on the beans?


Comment by: Limpopolondon
That is exactly the case. The raw beans have brown nibs, which turn to nearly black with even 5/7 mins roasting at 125c

Comment by: DavidCacaoHuila
Hi, i’m wondering, by dark you mean burnt? Are you sure raw beans aren’t over-fermented? That would turn them from brown to black.