My partner is veggie, but also into classical yoga, which includes a lot of theory on health and diet. They believe that food we consume comes first from air/w

My partner is veggie, but also into classical yoga, which includes a lot of theory on health and diet. They believe that food we consume comes first from air/water/sun. Veggies grow in the sun and consume air/water/earth. She doesn't eat mushrooms or other nightshades because they don't grow in the sun. It is less about 'meat' and something much simpler... anything that comes from secondary sources, like cows eating grass, shouldn't be eaten. Since lab grown meat doesn't fall under the air/water/sun conditions, it is an easy no for her.