Sagar Ratna is a dependable lacto-vegetarian restaurant chain serving high-quality South and North Indian dishes. Good food, good service, fair prices, and tasteful decor (nice but not overdone). Fresh juices too. We've been to the Connaught Place location many dozens of times, and it's consistently good on all counts.
Unlike many other Indian lacto-veg spots, Sagar Ratna is vegan-friendly in the sense of being both happy and competent to accommodate requests for "no cheese, no butter, no cream," etc., and in our experience they've always executed the special orders correctly - they've never served us dairy products, so as vegans we appreciate that greatly (and if you have allergies or lactose intolerance, you will too). Just politely communicate very clearly and you should get exactly what you ordered.
- Paalak (spinach), which is particularly tasty here and can be done vegan by requesting "plain paalak without paneer, butter, ghee, or cream."
- Mushroom masala (be forewarned: it's spicy and relatively rich)
- Tandoori roti (they're big, so 2 is plenty to polish off a single serving of your veggie dish of choice)
- Fresh fruit juices - try the mosammi juice (a.k.a. "sweet lime," though it's not in fact a lime; it's an orange-sized fruit with a taste somewhere between orange and lime, or thereabouts).
The only thing we've had that we found subpar was the tomato soup (not terrible, but below average).
Until Delhi gets an all-vegan, organic restaurant (one can hope, right?), Sagar Ratna will continue to get a lot of our business.
UPDATE - JAN 2013
Sagar Ratna continues to deliver great food and vegan-friendly service. We're impressed that the same high standard has been upheld for so long.
We notice another reviewer believes he got sick from eating here, which we find surprising because we've eaten here 100+ times and never been sick. Having lived and worked in India more than 11 years, we can attest that in fact it's very difficult to pinpoint the source of one's illness because many disease-causing organisms take between 24 hours and 4 weeks to germinate, so when one gets sick it's rarely the case that the last meal you ate is the one responsible. It's nearly impossible to be sure, so while it may be true that the reviewer got sick at Sagar Ratna, the odds are against it. Even if it were true, it seems like a fluke because the place is very clean. We wouldn't want others to be scared away from one of Delhi's best options.