Along with the cup for the Prophet Elijah, we have on our table a cup for the Prophetess Miriam, who helped lead the Israelites out of Egypt, and provided them with life-sustaining water during their wandering in the desert. Even after her death, the Israelites were sustained by the fresh waters of Miriam's Well.

Zot Kos Miryam, kos mayim hayim. Zeikher l'yitziat Mitztrayim.

This is the Cup of Miriam, the cup of living waters. Let us remember the Exodus from Egypt. These are the living waters, God's gift to Miriam, which gave new life to Israel as we struggled with ourselves in the wilderness. Blessed are You God, Who brings us from the narrows into the wilderness, sustains us with endless possibilities, and enables us to reach a new place."

haggadah Section: Introduction
Source: "Miriam's Cup blessing" 1996 Kol Ishah