1 In general, the total dissolved solids concentration is the sum of the cations (positively charged) and anions (negatively charged) ions in the water.  Parts per Million (ppm) is the weight-to-weight ratio of any ion to water.
If you refrigerate the rice, and you want to eat it cold, its perfectly fine. People eat cold rice salads all the time. Cold rice pudding is fine. Its just sitting around at room temperature that is the problem.
How to eat during cold or flu: Eat half a cup of fresh baby carrots a day or eat other foods, rich in beta-carotene such as sweet potato, pumpkin, squash and cantaloupe. Eating yogurt with live bacteria when you have cold or flu is a good way to improve your health.hoose low-fat, sugar-free yogurt with live active cultures seal. Morning cereals are not only a good start of your day, but also great food to eat when you have common cold or flu. Whole grains such as oats and barley are rich in beta-glucan, a soluble fiber with powerful immune boosting properties.