Few people prepare food only once, because it is much more convenient to cook a lot, and then warm up portionwise. It is important to know that some products as a result can become hazardous to health.
The habit of a huge number of people is to prepare a lot of food at once, enough to last several times. It is worthwhile to know that there are some products that are prohibited from re-heating, as this can lead to the fact that the food will not be useful and even dangerous for health.
1. Potatoes
Heated re-potatoes can not be called a harmful product, rather useless. Freshly prepared dishes contain many health-giving substances, but when they are reheated they evaporate and potatoes become useless to the body. Boiled potatoes instead of re-heating it is better to add to salads.
2. Mushrooms
In cooking, different mushrooms are used, which contain a large amount of vegetable protein. With repeated heat treatment these products change their chemical composition, which can cause bloating, stomach pain and other gastrointestinal problems.
3. Oil
Doctors unanimously assert that in no case can you reuse oil, because it will accumulate toxic substances that increase the level of cholesterol in the blood. That's why the french fries, nuggets and the like are so harmful. When reheating, the oil becomes more viscous and dark, so if you notice any changes in the structure of the product, it is better to dispose of it.
4. Chicken
Poultry dishes are very popular, especially given the benefits of this meat. It is worthwhile to know that the secondary heat treatment changes the structure of proteins, and this can negatively affect the activity of the digestive system. It is better to use ready-made poultry in a cold form in salads, sandwiches and other dishes.
5. Celery
A useful vegetable that is used for cooking salads, first and second courses. If you like to include it in recipes, then you know that when you re-heat the safe nitrates entering the vegetable composition turn into toxic substances and carcinogens. Do not risk and prepare a small amount of soup or pay attention to recipes of cream soups that are tasty and cold.
6. Beets
Many are accustomed to cooking a large borsch pan, but you should know that when the first dish is reheated, the nitrates that make up beets are converted into nitrites. These substances can cause problems with the digestive system.
7. Eggs
In most cases, people eat eggs immediately after cooking, but there are exceptions. Doctors do not recommend reheating eggs or an omelet repeatedly, because in these dishes toxic substances will be released. It is best to eat leftovers in a cold state.
8. Spinach
Such greens are not only tasty, but also useful, so it is included in the diet of people who are watching their health and figure. Is in spinach and safe nitrates, as in celery, which because of the repeated heating turn into harmful substances. To get maximum benefit from greens, do not give it a secondary heat treatment, but rather use it fresh, for example, for smoothies, salads and sandwiches.
9. Rice
The danger of this popular side dish is no longer in reheating, but in storage conditions. Rice groats can contain spores of microorganisms that cause food poisoning, and they may not die during heat treatment.
In the end, if you leave the cooked rice to cool down at room temperature, then spores of bacteria will actively multiply and secrete poisons. With repeated heat treatment, destroying harmful substances, most likely, will not work, so the risk of diarrhea and vomiting is significant. It is best to eat rice immediately after cooking, but if this is not possible, then at room temperature keep the porridge for not more than an hour, and in the refrigerator - no longer than a day. When re-warming the garnish, use large temperatures.