Acidulated water is a chemical solution that is made by mixing an acid with water. It has many cooking applications, most of which focus on retaining color. It is very easy to make this type of water at home by adding an acid such as vinegar, lime juice, lemon juice or white wine to water and shaking it to distribute the acid. The resulting acidulated water should be used relatively quickly. Most cooks mix a fresh batch for each intended use.
Prevents Browning of Fresh Fruits and Vegetables
Of the most useful applications for acidulated water is as a soak for fruits and vegetables to prevent browning. Fruits such as apples, avocados and pears can be dipped in the water to slow the browning process. The same can be done with many vegetables. The water will not completely stop the browning, but it will greatly slow it, keeping the fruits or vegetables looking fresh and crisp if they are to be eaten raw. In addition, the faintly tart flavor of the water can be pleasing to the palate.
When acidulated water prevents browning, it does so in two ways. Coating a fruit or vegetable in water reduces the amount of oxygen to which the cut portions are exposed. Browning is caused by oxidation, so the rate of browning will be slowed. The acid lowers the potenz hydrogen (pH) levels on the surface of the food, which also will slow the browning process. When using an acid water soak, the food should not be saturated, or it will taste soggy, and it should be patted dry before being eaten or used.
Uses in Cooking
There also are uses for this type of water in cooking. Vegetables that are cooked in acidulated water will retain their color instead of graying or browning when they are cooked. This can make cooked vegetables look much more appetizing, and the faint hint of acid will affect the flavor. This water also is used in poaching because the lower pH of the water will help the proteins in ingredients such as eggs and fish to cook thoroughly.
Uses in Drinking Water
Some people also like to drink acidulated water. The neutral flavor of ordinary water is unappealing to some people, whereas water that has a hint of acid tastes more crisp and refreshing. If a person has difficulty drinking his or her daily recommended amount of water, making up a bottle of the water might be a good idea. Lemon juice and lime juice are considered to be the best additions for making acidulated water that is intended for drinking, and a sprig of mint can make the flavor even more appetizing.