Put water to boil in a deep vessel. Add kichidi, salt, soda, stir and cook. Cook till mixture is thick and gooey. Take off fire. Spread a thick sheet of plastic of a cloth sheet. Place the sheets in an open space under direct sunlight. Take ladlefull of mixture, spread into small thick circles. Repeat to use up all mixture. Dry in sun till brittle, flipping side when half dried. Store in airtight container. Deepfry in hot oil, as and when required. Serve as a tasty, crunchy snack.