The concept of a Daniel Fast comes from Daniel 1:8-14, "But Daniel resolved not to defile himself with the royal food and wine, and he asked the chief official for permission not to defile himself this way. Now God had caused the official to show favor and sympathy to Daniel, but the official told Daniel, "I am afraid of my lord the king, who has assigned your food and drink. Why should he see you looking worse than the other young men your age? The king would then have my head because of you." Daniel then said to the guard whom the chief official had appointed over Daniel, Hananiah, Mishael and Azariah, "Please test your servants for ten days: Give us nothing but vegetables to eat and water to drink. Then compare our appearance with that of the young men who eat the royal food, and treat your servants in accordance with what you see." So he agreed to this and tested them for ten days.
The background of the "Daniel Fast" is that Daniel and and his friends had been "deported" to Babylon when Nebuchadnezzar and the Babylonians had conquered Judah (2 Kings 24:13-14). Daniel and his three friends were put into the Babylonian court servant "training program." Part of the program was learning Babylonian customs, beliefs, laws, and practices. The eating habits of the Babylonians were not in complete agreement with the Mosaic law. As a result, Daniel asked if he and his friends could be excused from eating the meat (which was likely sacrificed to Babylonian false gods and idols).
Why are we fasting 21 Days? (Daniel 10:2-3)
"At that time I, Daniel, mourned for three weeks. I ate no choice food; no meat or wine touched my lips; and I used no lotions at all until the three weeks were over."
Foods to Eat:
Whole Grains: Brown rice, oats, barley
Legumes: Dried beans, pinto beans, split peas, lentils, black eyed peas
Fruits: apples, apricots, bananas, blackberries, blueberries, boysenberries, cantaloupe, cherries, cranberries, oats, figs, grapefruit, grapes, guava, honeydew melon, kiwi, lemons, limes, mangoes, nectarines, papayas, peaches, pears, pineapples, plums, prunes, raisins, raspberries, strawberries, tangelos, tangerines, watermelon
Vegetables: artichokes, asparagus, beets, broccoli, brussels sprouts, cabbage, carrots, cauliflower, celery, chili peppers, corn, cucumbers, eggplant, garlic, gingeroot, kale, leeks, lettuce, mushrooms, mustard greens, okra, onions, parsley, potatoes, radishes, rutabagas, scallions, spinach, sprouts, squashes, sweet potatoes, tomatoes, turnips, watercress, yams, zuchini
Seeds, nuts, and sprouts
Liquids: spring water, distilled water, 100% all-natural fruit juices, 100% all natural vegetable juices