▁designed ▁to ▁encou rage ▁the ▁production ▁of ▁sugar ; ▁sugar ▁is ▁thus ▁typically ▁used ▁to ▁swe eten ▁sod as . ▁In ▁addition , ▁ste via ▁or ▁an ▁artificial ▁sweet ener ▁may ▁be ▁used ; ▁" s ug ar - free " ▁or ▁" d iet " ▁col as ▁typically ▁contain ▁artificial ▁swe eten ers ▁only . ▁ ▁Clear ▁col a ▁ ▁In ▁the ▁ 1 9 4 0 s , ▁C oca - Col a ▁produced ▁White ▁Co ke ▁at ▁the ▁request ▁of ▁Marsh al ▁of ▁the ▁Soviet ▁Union ▁Georg y ▁Zh uk ov . ▁ ▁Clear ▁col as ▁were ▁again ▁produced ▁during ▁the ▁Clear ▁Cra ze ▁of ▁the ▁early ▁ 1 9 9 0 s . ▁Br ands ▁included ▁Cry stal ▁Pe psi , ▁Tab ▁Clear , ▁and ▁ 7 ▁Up ▁Ice ▁Col a . ▁ ▁Cry stal ▁Pe psi ▁has ▁been ▁repeatedly ▁re int rodu ced ▁in ▁the ▁ 2 0 1 0 s . ▁ ▁In ▁Den mark , ▁a ▁popular ▁clear ▁col a ▁was ▁made ▁by ▁the ▁Cooper ative ▁F DB ▁in ▁ 1 9 7 6 . ▁It ▁was ▁especially ▁known ▁for ▁being ▁the ▁" H ipp ie ▁Col a " ▁because ▁of ▁the ▁focus ▁of ▁the ▁harm ful ▁effects ▁the ▁color ▁add itive ▁could ▁have ▁on ▁children ▁and ▁the ▁boy c ott ▁of ▁mult in ational ▁br ands . ▁It ▁was ▁inspired ▁by ▁a ▁campaign ▁on ▁harm ful ▁add it ives ▁in ▁Den mark ▁by ▁the ▁Environment al - Organ isation ▁NO A H , ▁an ▁independent