Starch serves various nutritional and functional properties in food cookery and applications. You can use it to thicken soups e.g. your soup appears to be watery and you wish to thicken it .You can mix some water with starch such as flour or corn starch and add to the soup after it has cooked.
To enhance a crunchy texture on a food-You can use starch such as flour on a food i.e. meat then fry it to acquire a crunchy taste .To obtain a well-crusty texture, ensure that all water is drained from the dish prior to adding the starch.
To preserve foods for longer-Through the enhancement of texture for the various foods , their shelf-life is extended too.
Starch improves the nutritive value of certain dishes by adding their fibre content. Starches are high in fibre, and therefore their inclusion in a meal increases its fibre content.