It may consist of speeches on Torah subjects, singing of melodies known as niggunim (singular niggun) and zemirot ("hymns"), with refreshments being served.
Within Hasidic Judaism, a tische refers to any joyous public celebration or gathering or meal by Hasidim at a "table" of their Rebbe.
Such a gathering is staged around the blessing of Melchizedek-themed "setting of the table" and so is often referred to in Hebrew as Arichat HaShulchan (עריכת השולחן).
In large Hasidic movements, only the Rebbe and his immediate family, plus a few close disciples, partake of the actual meal, but small pieces of bread, fish, meat, poultry, farfel, beans, kugel, cake or fruit, as well as small cups of wine or other beverages, are distributed to all present as shirayim (שיריים, lit., remnants).
The nature of the tische differs from group to group but during the tische, the Hasidim intently and silently watch the rebbe eating the meal and are extremely eager to receive shirayim ("leftovers"), cooked alongside the Rebbe's courses, believing it to be a great merit (zechus) to eat something from the leftovers of a tzadik's meal.
Many Hasidim claim that miracles can take place in merit of partaking of the shirayim, such as miraculous healing or blessings of wealth or piety.
The rebbe may teach words of Torah, often mystical passages from the Midrash, Zohar, and the Kabbalah during the tische.
A tische takes place at the meals in honor of the Shabbat, Jewish holidays, yahrzeit ("annual memorial") for previous rebbes of that dynasty, as a seudas hoda'ah (meal of thanksgiving) to God for past salvations (such as escape from prisons or from the Holocaust), or some other seudas mitzvah.
For example, Belzer Hasidim conduct their tische both late Friday night and on Saturday afternoon for Seudah Shlishit, while Gerrer Hasidim only have their tische on Saturday afternoon or early evening for Seudah Shlishit.