Try this Spinach Oats Dhokla Recipe. It is a yummy way to sneak more spinach into normal idli made of sooji. Just one cup of cooked spinach contains more than 6 milligrams of iron. That may not seem like a lot, but the National Institute of Health suggests at least 19 milligrams per day for adult men and at least 17 milligrams for adult women.
So that one cup covers about one-third of your daily recommended servings, which is especially good news for vegetarians.