Ninja Turtle

Start a new topic for a new roast profile. Reply to an existing topic to enter your comments on the profile, or to attach minor variants.
Rate this topic
Post Reply
User avatar
kaffelogic
Site Admin
Posts: 299
Joined: Thu 18 Oct, 2018 9:38 am
Contact:

Ninja Turtle

#821

Post by kaffelogic » Wed 04 Mar, 2020 1:08 pm

This is a version of the Ninja profile that slows down after it reaches 185 deg C to stretch out development and improve complexity. A very versatile profile that features a 'ninja kick' at the start with a medium slow down after first crack. Good for dense beans, but also suits some low density beans particularly well.
ninjaturtle.kpro
(2.09 KiB) Downloaded 39 times

mr. bean
Posts: 3
Joined: Tue 24 Mar, 2020 12:06 am

Re: Ninja Turtle

#890

Post by mr. bean » Tue 24 Mar, 2020 5:06 pm

Hi, I'm very new to the Kaffelogic, so yet to actually try these uploaded profiles. Just having a look around at what's available and how to use the software etc.
With the Ninja Turtle, the slow down after less than a minute and then picking up after 2 minutes appears to make the rate of rise drop very sharply then increase again, before decreasing. My memory of Scott Rao's 'rules' of roasting was to never make the rate of rise increase during a roast. Is that an issue here, or am I missing something? (Or just not remembering Roa's rules!?)
Cheers, matt

User avatar
kaffelogic
Site Admin
Posts: 299
Joined: Thu 18 Oct, 2018 9:38 am
Contact:

Re: Ninja Turtle

#891

Post by kaffelogic » Tue 24 Mar, 2020 5:46 pm

mr. bean wrote:
Tue 24 Mar, 2020 5:06 pm
Hi, I'm very new to the Kaffelogic, so yet to actually try these uploaded profiles. Just having a look around at what's available and how to use the software etc.
With the Ninja Turtle, the slow down after less than a minute and then picking up after 2 minutes appears to make the rate of rise drop very sharply then increase again, before decreasing. My memory of Scott Rao's 'rules' of roasting was to never make the rate of rise increase during a roast. Is that an issue here, or am I missing something? (Or just not remembering Roa's rules!?)
Cheers, matt
Scott Rao does indeed call for a steadily falling ROR. He also says that you must ignore the ROR for the the first approx 2 mins of the roast because during that time the typical temperature probe is not reading anything close to bean surface temperature. In the Kaffelogic during the first couple of minutes, without a true preheat, the temperature probe more-or-less does the opposite to what it does in a typical roaster with preheat. Another of Rao's principles is that you must apply plenty of heat very early in the roast. That is what the Ninja 'kick' at the start of the profile is doing. The slowdown that you have commented on after less than a minute is something that some profile designers would avoid, but at this time we have very little data on whether it makes things better or worse. I have found that I get good results using it. In addition, the steadily falling ROR is connected to chemical processes that have not commenced prior to the roast reaching 120 deg C. Some users have found that the ROR can go all over the place prior to 120 deg C without having a detrimental effect on the coffee, yet at the same time confirming even small dips or flatlines in the ROR having severely detrimental effects later in the roast.

mr. bean
Posts: 3
Joined: Tue 24 Mar, 2020 12:06 am

Re: Ninja Turtle

#893

Post by mr. bean » Thu 26 Mar, 2020 12:03 am

Thanks! Very helpful : )

Post Reply