DetailsOrganic Ragi (Finger millet) Flour. Ragi is rich in calcium. Instead of popping a pill, you can as well substitute that with ragi kanji. Boil a glass of water, put a spoon of ragi flour into boiling water, add a little salt and let it cool. Drink it with a pinch of salt and butter milk. This will not just cool your body, but also gives you strength and cools your body. 500 gm.