Just started roasting with Bullet, realised that the roast Color always came out very different within a same batch of roast. Been roasting with smaller batch with 200g, drum speed at D9, Fan at F6 throughout the whole roast. Roast time range from 7 -8 mins. Tried with Colombia (washed /natural ) ,natural Mexico, natural Brazil, all having the same issues.
I don’t do soaking, which normally start with D8 to charge, charge temp at 210c ish, decrease accordingly at yellowing, mid of yellowing and before FC , from p7 - the lowest p5 entering FC and remain till end of the roast. End temp range around 205c.
*understand mixed varietal or natural processed would caused difference in color, so I compared one natural Colombia with the Bean roasted with Ikawa roaster, it came out very big diff compared to ikawa as Ikawa roast seemed very uniform.