つけ汁じる

つ

け

じ

る

Meanings

A sauce used for dipping, especially for noodles like soba or udon, or for tempura.

たれ
たれ is a thicker, often sweet-savory sauce used for basting or dipping grilled foods, while つけ汁 is typically a thinner broth-based dipping sauce for noodles or tempura.
つゆ
つゆ is a general term for soup or broth, often used for the dipping sauce of soba/udon as well, but つけ汁 specifically emphasizes its role as a dipping sauce.

Compound of つけ (continuative form of つける 'to dip') + 汁 (しる 'soup, juice'). The reading つけじる is standard; つけしる is a less common variant.