d ried ▁milk ▁pow der . ▁ ▁Free ze - d ry ing ▁- ▁The ▁first ▁application ▁of ▁free ze ▁dry ing ▁was ▁most ▁likely ▁in ▁the ▁ph arma ce ut ical ▁industry ; ▁however , ▁a ▁successful ▁large - scale ▁industrial ▁application ▁of ▁the ▁process ▁was ▁the ▁development ▁of ▁continuous ▁free ze ▁dry ing ▁of ▁coffee . ▁ ▁High - Tem per ature ▁Short ▁Time ▁Process ing ▁- ▁These ▁processes , ▁for ▁the ▁most ▁part , ▁are ▁character ized ▁by ▁rapid ▁he ating ▁and ▁cool ing , ▁holding ▁for ▁a ▁short ▁time ▁at ▁a ▁relatively ▁high ▁temperature ▁and ▁filling ▁a se pt ically ▁into ▁ster ile ▁containers . ▁ ▁Dec aff e ination ▁of ▁C off ee ▁and ▁Te a ▁- ▁Dec aff ein ated ▁coffee ▁and ▁tea ▁was ▁first ▁developed ▁on ▁a ▁commercial ▁basis ▁in ▁Europe ▁around ▁ 1 9 0 0 . ▁The ▁process ▁is ▁described ▁in ▁U . S . ▁pat ent ▁ 8 9 7 , 7 6 3 . ▁Green ▁coffee ▁be ans ▁are ▁treated ▁with ▁water , ▁heat ▁and ▁sol vent s ▁to ▁remove ▁the ▁c aff e ine ▁from ▁the ▁be ans . ▁▁ ▁Process ▁optimization ▁- ▁Food ▁Technology ▁now ▁allows ▁production ▁of ▁food s ▁to ▁be ▁more ▁efficient , ▁O il ▁saving ▁techn ologies ▁are ▁now ▁available ▁on ▁different ▁forms . ▁Production ▁methods ▁and ▁method ology ▁have ▁also ▁become ▁increasing ly ▁s oph istic ated . ▁ ▁Cons umer ▁accept ance ▁▁ ▁Histor ically , ▁consum ers ▁paid ▁little ▁attention ▁to ▁food ▁techn ologies