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Jyutping bei3 zai3
Pinyin mì zhì

Definitions (粵典–words.hk)
  1. 區別詞
    用​秘密​嘅​方法​去整​;​通常​係​宣傳​或​命名​食品​嗰​陣​作​為​前​綴​,​用​誇張​手法​話​啲​食品​好​特別
    "made using secret recipe"; usually used as a marketing catch phrase in the prefix of foods; often the phrase is meaningless
    • 秘製醬汁
      秘制酱汁
      secret sauce
    • 秘製雞煲
      秘制鸡煲
      secret recipe chicken pot
Definitions (Wiktionary)
  1. verb
    to prepare using a secret recipe

秘製 [-制]

Jyutping
Pinyin mì zhì

Definitions (CC-CEDICT)
  1. to prepare (food etc) using a secret recipe
Examples (粵典–words.hk)
  1. Cantonese
    秘制酱汁
    秘製醬汁
    • secret sauce
  2. Cantonese
    秘制鸡煲
    秘製雞煲
    • secret recipe chicken pot