What foods are forbiden for Buddhism?

Answer 1

There are no foods restricted to Buddhists, but it is good thing to avoid killing any sentient being, so some Buddhists choose to not eat meat. Others eat meat, but avoid killing the animals they eat.

Answer 2

Meat and fish are not eaten by many people in the Theravada and Mahayana schools of Buddhism. Some believers in both Theravada and Mahayana are vegans, and some particularly from China and Vietnam do not eat onion, garlic or leek either - referring to these as the 'five pungent spices.'

Buddha advised the monks to avoid eating ten kinds of meat for their self-respect and protection: humans, elephants, horses, dogs, snakes, lions, tigers, boars and hyenas.