Re: Nordic Light
Posted: Sat 21 Jan, 2023 12:34 pm
Hi,
This is still my favorite profile. I'm working with it and I'm doing some adjustments. The NordicLight4 had a higher fan speed in the beginning of the roast to make the movement in the beginning better for bigger beans. I also lowered the batch size to 90g and lowered the preheat to avoid burning the beans. At the same time is often a higher preheat advantageous to get a "good start" of the roast. I modified the NordicLight4 with a even higher fan speed in the beginning but also a higher preheat (1000W). It's the same bean as above an Indian washed Kalledavarapura. These beans are rather big (compared with for example the smaller washed Sidamo). I call this profile NordicLight5: This is the result: Movement in the beginning of the roast was ok and better than before the modification.. I marked 1st crack a little late so DTR is more than 20% and the bean is fully developed but it's a very light roast.
I did also roast the same Sidamo Gr2 bean as above and used the same NordicLight2 profile as before with this bean. It had the same 1000W preheat as the Indian bean with NordicLight5. I blend these beans 50/50 and it's a very nice blend in my opinion. This is the result: I think it looks ok but I may for this bean make the "boost" of zone 3 less negative. This is also a very light roast but developed. The movement in the beginning of the roast was equally good with this smaller bean and the batch size was 95g - 5g more than with the bigger bean If you compare the two logs you can see the difference with the fan profile (blue line). The NordicLight5 has a higher fan speed in the beginning. The KL is a pure "fluid bed" roaster and the movement of the beans depends on the fan speed and you have to optimize it. A very high fan speed means a higher power consumption. This can seem to be a disadvantage compared to a roaster with a rotating drum. The advantage with the KL is that it is much smaller but you have to optimize the fan speed and also the size of the batch.
EDIT: I tasted the 50/50 blend of te two roasts and measured the roast degree of the blend with the Tonino meter. It was 116. More than 115 is very light ("cinnamon") with this instrument. I tasted it as filter coffee one day after the roast and it was almost tea like but more sweet and less tannin. The acidity was balanced. It was fruity. Very nice!
This is still my favorite profile. I'm working with it and I'm doing some adjustments. The NordicLight4 had a higher fan speed in the beginning of the roast to make the movement in the beginning better for bigger beans. I also lowered the batch size to 90g and lowered the preheat to avoid burning the beans. At the same time is often a higher preheat advantageous to get a "good start" of the roast. I modified the NordicLight4 with a even higher fan speed in the beginning but also a higher preheat (1000W). It's the same bean as above an Indian washed Kalledavarapura. These beans are rather big (compared with for example the smaller washed Sidamo). I call this profile NordicLight5: This is the result: Movement in the beginning of the roast was ok and better than before the modification.. I marked 1st crack a little late so DTR is more than 20% and the bean is fully developed but it's a very light roast.
I did also roast the same Sidamo Gr2 bean as above and used the same NordicLight2 profile as before with this bean. It had the same 1000W preheat as the Indian bean with NordicLight5. I blend these beans 50/50 and it's a very nice blend in my opinion. This is the result: I think it looks ok but I may for this bean make the "boost" of zone 3 less negative. This is also a very light roast but developed. The movement in the beginning of the roast was equally good with this smaller bean and the batch size was 95g - 5g more than with the bigger bean If you compare the two logs you can see the difference with the fan profile (blue line). The NordicLight5 has a higher fan speed in the beginning. The KL is a pure "fluid bed" roaster and the movement of the beans depends on the fan speed and you have to optimize it. A very high fan speed means a higher power consumption. This can seem to be a disadvantage compared to a roaster with a rotating drum. The advantage with the KL is that it is much smaller but you have to optimize the fan speed and also the size of the batch.
EDIT: I tasted the 50/50 blend of te two roasts and measured the roast degree of the blend with the Tonino meter. It was 116. More than 115 is very light ("cinnamon") with this instrument. I tasted it as filter coffee one day after the roast and it was almost tea like but more sweet and less tannin. The acidity was balanced. It was fruity. Very nice!