Vegetables and fruits should be washed thoroughly BEFORE cutting. Some vitamins, such as the B group vitamins and Vitamin C are water soluble and will get washed away along with some other nutrients. Nutrition loss occurs also by buying precut veggies, or from storing them for too long in the fridge
Nutrition is enhanced by leaving edible skins on vegetables such as carrots, potatoes, zucchini etc. Minerals are found in the outer leaves, skin, and just below the skin. Peels are natural barriers that help protect nutritional loss.
Veggies should be cooked in just enough water. The water has nutrients too and should not be thrown away. If you must “drain” cooking liquid, freeze it and store it for later use. Alternately, add it to soups, sauces and gravies.
Vegetables should not be overcooked. High heat over longer cooking time destroys vitamins and nutrients.
A good way of cooking veggies is to steam them. Steam kills the enzymes on the exposed surface of food, but the moisture seals and preserves many of the enzymes deep inside where intense surface temperature does not reach. This also enhances taste. A wok with a high domed lid is good for retaining steam in the cooking process.
Microwave ovens help to keep vitamin loss to a minimum.
Salt should be added at the end—not only will you add less this way, but vitamins are better preserved
Cooking the right way makes food more digestible. Cooking makes certain nutrients, particularly carbs and proteins more accessible to the enzymes that break them down into smaller molecules, which can be transported from the digestive tract to the blood stream. It is important to cook veggies, especially those that have stiff cellulose walls which are difficult for enzymes to penetrate, Heat and water cause these cells to burst open.
The Chinese ‘stir fry’ method preserves nutrients very well. The cooking temperature is high, but cooking time is brief. This prevents evaporation and loss of vital juices and seals the enzymes inside the vegetable.
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