noun
secret method; secret formula
General term for a confidential technique, recipe, or process, often in cooking, manufacturing, or magic.
このソースは代々伝わる秘法で作られています。
This sauce is made using a secret method passed down for generations.
彼はその手品の秘法を決して明かさなかった。
He never revealed the secret method behind that magic trick.
noun
esoteric rituals (Shingon Buddhism)
Specifically refers to the secret, esoteric practices in Shingon Buddhism, not a general secret method.
真言宗の僧侶は秘法を厳格に守っている。
Shingon Buddhist monks strictly observe the esoteric rituals.