Second to naan, Nirvana is definitely my preference for Indian food in the valley. Just be careful of the korma after the meal. Lassi what I can think of for this review-
For 10-12 dollhairs (weekday vs weekend), the lunch buffet has a wide variety of non-veg and vegetarian options. They generally switch up the dishes so it's not always the same dishes. They are consistently serving some of my favorite options, such as the tandoori chicken, chicken curry, and biryani. Plus, unlimited naan! Desserts here are also really yummy. Kheer is a rice pudding and has became one of my favorite desserts. My absolute favorite thing at Indian buffets is the mango lassi. However, they have the tiniest styrofoam cups for the mango lassi. I have no shame so I grab 12 of them. On weekends, the chai tea and the champagne come with the meal! Angeli and her team do a phenomenal job making sure each customer enjoys their experience. Huge fan of this place and highly recommend it!
Protip: They usually have yelp check-in offers. The more reasons to yelp! They have had with 20% off the bill in the past and buy a $50 dollar gift card with an extra $10 gift card.