During the seder a green vegetable, usually parsley, is dipped into salt water and eaten. The clear glazed white clay matches the seder plates from the studio. Embossed text in Hebrew and English: "On this night we dip twice."
From the studio catalog, 1995
The text
הלילה הזה שתי פעמים
On this night we dip twice.
From the Four Questions of the Haggadah