יַיִן יָשַׁן בְּקַנְקַן חָדָשׁ

ביטוי (אנגלית)

Old wine in a new jug

הגדרה (אנגלית)

Metaphorically: old, good content presented in a new style.

("Rabbi says: Do not look at the jug, but at what is in it. There is a new jug full of old wine, and an old jug that does not even have new wine" - Avot 4:20)