In Jewish tradition, what is the memorial service recited four times a year called?

In Jewish tradition, the memorial service recited four times a year is called Yizkor. This service is specifically dedicated to remembering and honoring the souls of deceased loved ones. It occurs on certain holy days: Yom Kippur, Passover, Shavuot, and Sukkot. During Yizkor, individuals recite prayers and reflect on the memories of those who have passed, emphasizing the enduring connection between the living and the dead.

Kaddish, while also a prayer important in Jewish mourning practices, is recited regularly by mourners but is not a memorial service conducted four times a year. Tefillah refers broadly to prayer in Jewish tradition and does not specifically denote a memorial service. Shiva is a period of mourning following a death and involves rituals and practices different from the Yizkor service. Therefore, Yizkor is the correct choice as it precisely describes the memorial service held during specific times in the Jewish calendar.