(1) Implementation standards for solid liquor: GB/T10781(Luzhou-flavor), GB/T 1078 1.2 (Fen-flavor) and GB/T.
(2) The implementation standard of liquor by solid-liquid combination method is GB/T20822, some of which are alcoholic liquor and some are grain liquor.
(3) The implementation standard of liquid liquor: GB/T2082 1, based on edible alcohol.
You can judge whether the wine you drink is grain wine or alcoholic wine from the implementation standard.
Second, rub your hands
Pour the white wine into your hand and rub it with your hand. Pure grain liquor smells fragrant after heating and lasts for a long time. The liquor blended with alcohol has only the flavor of essence, which not only smells strange, but also stays for a short time and soon loses its flavor.
Third, look at hops
Shake the bottle upside down and observe the change of hops. Hops are dense and slowly disappear, and those that disappear less and faster are inferior.
Fourth, the empty cup method
Pour the wine into the glass, and then pour the wine out. When you smell the empty glass, it is alcohol blended wine, and when you smell the glass for about ten minutes, it is alcohol blended wine. The brewed wine has grain fragrance, wine fragrance and bad smell. The longer the fragrance is left, the stronger the content of the brewed wine is.
V. Water Law
The wine blended with alcohol does not lose its luster when added with water, and the wine brewed with pure grain loses its luster and turbidity. This is very correct. I tried it myself. This is because low-alcohol wine reduces the solubility of some substances in grain wine, leading to precipitation, resulting in loss of light and turbidity; However, there is very little of this substance in alcohol, and it will not be turbid after adding water.
Six, adding alkali method
Put the solution to be tested and caustic soda into the test tube according to the ratio of 50: 1. You can also use a cup that we can usually heat at home, and then add hot water to boil for a few minutes.
. If it is grain-brewed liquor, the liquor in the test tube will turn yellow. If the color is very light, it means that the pure grain wine is impure and contains alcohol blending ingredients. It is pure blended wine, and there is no discoloration, because the blended wine will not react chemically when it meets caustic soda.
Seven, combustion method
Pour a proper amount of white wine into a cup, light it, and observe the remaining wine body after the fire is extinguished. Grain wine is turbid, and alcoholic wine is clear. Because pure grain liquor not only contains alcohol, but also contains acid esters and other ingredients, and esters are insoluble in water, so it is turbid.
You can also taste/smell the remaining wine. Liquor brewed from pure grain, after burning alcohol, is the fermentation product of grain, with the flavor of distiller's yeast, sweet and sour. However, after the blended liquor is burned, the rest are chemical blending ingredients, and the taste is unpleasant.