This is the Savassi location of the Bem Natural group. It's large and has an extra area upstairs with air con and wifi, but it still almost always seems full. Best time to come is right when they open at 11:30; by 12:30 they're usually packed.
The buffet is usually 80% veg and vegan and features some amazing variety and fresh, local products. Veg items are marked with a green card, but ask staff about eggs, vegan items, etc. Excellent fresh juices are right next to the counter. They also have a small shop attached with some good local products.
Cons: not all veg, pricey, too crowded