Sangaria Delicious Milk Shake

With its "Delicious (or Oishii) Milk Shake", Sangria claims to have been the first company to sell milk shakes in PET bottles in 1998. This was by using a special aseptic filling method. No other details, but it tastes fairly good and has a fairly long shelf life despite containing milk and eggs. サンガリア おいしいミルクセーキ

http://www.sangaria.co.jp/products/milky/oishii-milk-shake/

Photo is a web capture for explanatory purposes, copyright belongs to the company.