Ethiopian cuisine
Both Ethiopian Orthodox Christians and Muslims avoid eating pork or shellfish, for religious reasons. Pork is considered to be unclean in both Ethiopian Orthodox Christianity and Islam. Many Ethiopians would abstain from eating certain meats, and would mostly eat vegetarian and vegan foods.
Nineveh
Nineveh's repentance and salvation from evil can be found in the Jewish Tanakh (also read by Christians) and the Muslim Koran. To this day, Syriac and Oriental Orthodox churches commemorate the three days Jonah spent inside the fish during the Fast of Nineveh. The Christians observing this holiday fast by refraining from food and drink. Churches encourage followers to refrain from meat, fish and dairy products.