So 2 days ago we try to roasting on automatic Brambati 30 kilo roaster. That was 2'nd time roasting for me & it was unbelievible!!!!!!!!!!!!!!! We roast brazilian santos. But we've notice something strange. Briefly we've 3 temperatures - 1st one in in begining (before we put coffee in roaster, it was 300 C), 2nd one is temperatire at the begining of roasting (it was 375 C until temperature on top of drum do not grow to 190 C), 3rd one at the middle of roasting (it was 320 C until temperature on top of roaster do not grow to 210 C) & 4th one is temperature when roasting are stop (it was 320 C). Total time of roasting was 14,35 min, color of beans are №11 of Agtron Scale (Medium "Full City"). We try to roast coffee for filter-machine & taste of coffee are nice, but little bittle dirty. BUT i heard that temperature of drum at the begining must be around 200 C... Also i heard that high temperature of roasting give flat taste of espresso... Can somebody tell me something about that?