Because it was invented by Jews for use at festive meals. The name comes from the small piece of dough that is removed before the bread is baked, as commanded in Numbers 15:17-21.
Challah is Jewish bread.
Challah is a braided loaf of egg-bread.
Challah.
Do a Google search of What Is The Origin Of Jewish Challah Bread. The top result is a Wikipedia article on that subject.
If you are referring to challah, it is made from: flour, eggs, water, oil, yeast, sugar, and salt. If you're referring to matzah, it is made from: flour and water There is also matzah that has egg in it or apple juice.
The sabbath is an everlasting covenant between the Jewish people and G-d. A part of its observance is to enjoy the day. Meals eaten at night, during the morning and late afternoon are all part of its observance and enjoyment.
Capitalize challah bread
It's challah
I think you're asking about "challah". It's a Jewish bread eaten during Shabbat.
Challah is not served at Jewish weddings.
Matzah; also spelled matzoh. This thin unleavened bread is eaten during Passover. See also:More about Passover and the Seder
It's used to cut the challah-bread on shabbat.