In an veganic manner.

plural of veganism

A person who does not eat, drink or otherwise consume any animal products

(of a product or practice, especially food) Not containing animal products (meat, eggs, milk, leather, etc) or inherently involving animal use.

plural of vegan

Strict vegetarianism; the practice of eating neither meat nor other animal products, such as fish, milk and milk products, eggs, and honey.

Third-person singular simple present indicative form of veganize

present participle of veganize

(transitive) To convert (a recipe, a meal, a person, etc.) to be vegan.

simple past tense and past participle of veganize