What is the difference between corn starch and potato starch?
In the culinary arts, not only a variety of products and spices, various processing techniques and tools are used. There are separate components that allow one way or another to modify the dishes being prepared. An example of such a substance is starch, the varieties of which should be known to everyone who decides to cook.
Composition comparison
Potato starch has to be used at least to make jelly. But at the same time, many recipes indicate the use of corn powder. Despite the common name, it is very important to distinguish between them. Suppose cooks take exactly the same amount of starch obtained from potatoes and from corn, then they cook jelly. In the first container, a thick liquid will turn out, almost not pouring out. And jelly cooked on a corn product does not let in the rays of light, but it pours easily.
According to culinary specialists, the corn version is recommended for dishes with a delicate texture, as well as for sauces. With the help of this substance, biscuits can be made softer, juicier in taste. But when it comes to making jelly or sand cake, the situation changes. The potato ingredient is characterized by increased viscosity, but it is usually consumed 50% less.
The difference in the properties of potato and corn starch does not prevent the use of both varieties when dissolved in both water and oil. There are a number of recipes that involve frying with oil in a pan and subsequent dilution.Another use is breading with starch mixed with spices. This coating is recommended for the following products:
- vegetables;
- meat dishes;
- fish;
- cheesecakes and cutlets.
Given that the properties of potato and corn starch are clearly different, the question to be answered is how to distinguish them. First of all, the color of the raw material gives a hint. Almost white potatoes after processing give a snow-white substance, composed of small crystals. In contrast, the corn product resembles a complex mixture of yellow and white. They are intertwined in such a way that they almost cannot be distinguished.
Additionally, it is worth paying attention to the fact that the structure of corn starch is more fractional; crystals cannot be found with the naked eye. In addition to the external difference, there are also unequal tactile sensations. The corn product resembles flour, and the one obtained from the nightshade culture is slightly crunchy if you try to grind it with your fingers.
It follows that the starch obtained from corn should be kept away from flour, so as not to accidentally mix it up. When preparing dishes that contain both of these components, maximum attention is required.
The difference manifests itself even in the course of culinary processing. If you take the same volumes of starch from potatoes and corn, pour it into water and boil, the potato liquid will hardly lose transparency. But the water in another glass will acquire a milky hue. The difference in the ratio of the two types of starch and other products mentioned in the recipes is due to the unequal consistency.
Chemists have found that the difference between corn starch and potato starch is due to the uneven branching of the starch chains.But the energy value, saturation with organic components, the effect on the body are identical. For your information: the starch originally obtained in this form is almost never used, it is usually processed in various ways to give the necessary properties. There are starches that swell even at a temperature of 20 degrees. Other formulations are designed to stabilize acid media or for emulsions.
Can one be substituted for the other?
Some do just that, and “nothing seems to be happening”, as it seems. But in a serious kitchen, or even just striving to be one, they will never use potato starch instead of corn starch or vice versa. This is considered unprofessional. Gluten-free corn has a light structure, so its specific area of use is:
- diet food;
- decrease in the saturation of flour dishes;
- custard and pastry preparation.
The carbohydrate obtained from potatoes is primarily needed as a thickener. It can also be used in baking, but only one that contains cottage cheese or fruit. Another possibility of its use is meat breading. The technology of use in all cases is identical. Starch is added to the liquid, which should become more viscous, and after dissolving the additive in it, the dish is sent to cool.
As a result, the liquid thickens (as chemists say, gelatinizes). The downside of potato starch is that it becomes thinner when used in excess. Therefore, it is required to introduce the component in small portions. Corn thickener also works well, but the thickening effect only occurs at high temperatures. Sprinkling it on cooling dishes is a bad idea.
Cornstarch gel has a partially reducible structure. It is important to distinguish between the composition obtained from plain corn and from waxy cobs. Potato starch is introduced to create certain flavor notes. But the substance obtained from cereals does not have special organoleptic properties.
Professional chefs, however, focus not on the type of raw materials, but on the specifics of a particular brand.
Which is more useful?
This question is asked by all consumers who naturally want to buy a product of the best quality.
There is a popular myth that potato starch or its consumption in general increases the development of body fat. In reality, the situation is the opposite, experts even recommend the use of starch for weight loss.
Since there is no particular difference in terms of chemical composition, the reagents obtained from both types of plants:
- help generate energy
- strengthen immunity;
- lower the concentration of sugar in the blood.
The rate and frequency of starch consumption depend on a number of factors: age, physique, concomitant pathologies, physical activity, environmental conditions, type of professional activity. Only physicians can take all this into account in due measure. In any case, it is not recommended to introduce starch into the diet without measure.
Of particular danger are processed, modified mixtures in comparison with the natural base. For your information: you can replace starch in cooking and other areas with any other suitable thickeners according to the recommendations.
How to make potato starch with your own hands, see the following video.