Types of wine

Home-made wines can be divided into two classes:

A hydrometer is very simple to use. Although it is used to measure the density of a liquid, it does give a fairly accurate indication of the sweetness of a wine. The hydrometer has a weighted end, and the tube is graduated along its length, usually from 990 at the top to 1170 at the bottom. The reading is the specific gravity, and if a hydrometer is placed in a tall, narrow glass container full of water, it will give a reading of 1000. If placed in a container with some of the liquor just prior to fermentation, it will indicate the amount of sugar present, including the natural sugar in the ingredients. To obtain the true reading, the liquid should be at a temperature of 60°F/15°C, the hydrometer placed in the container and spun gently so that any air bubbles are thrown off. Once there is a true starting gravity, the same procedure will give a finishing gravity, and by taking one from the other, one can assess the alcoholic content by an arithmetical formula. The calculation is quite simple to make, and an example for a table wine is as follows: