一、在散白酒中适当加水，看色泽变化。把酒倒入干净的怀中，然后加些清水，摇晃后，如果酒仍然是清澈的，则是酒精兑制酒。粮食酒加入清水后，会稍有混浊。
1、 Add water properly in the bulk liquor to see the color change. Pour the wine into the clean arms, then add some water, shake, if the wine is still clear, it is alcohol to exchange. When grain wine is added with clear water, it will be slightly turbid.
二、用手揉搓白酒，看香味变化。用手指蘸一滴白酒，与母指互相揉搓发热，粮食酿造的白酒成分复杂，揉搓后手指有粘稠感，香味醇厚不易挥发，手指干了之后仍有香味，持续很长，甚洗手之后仍有酒香味。而勾兑酒含酒精、香精，均易挥发，的香味时间比较短，比较淡。
2、 Knead the liquor by hand to see the change of fragrance. Dip a drop of white spirit in your finger and rub it with your mother's finger until it is hot. The ingredients of white spirit brewed from grain are complex. After rubbing, your fingers feel viscous, and the fragrance is mellow and hard to volatilize. After drying your fingers, there is still a fragrance that lasts for a long time. Even after washing your hands, there is still a smell of wine. Blending wine contains alcohol and flavors, which are volatile, leaving the fragrance time shorter and lighter.
三、用耐热怀或试管，按1克烧碱50克白酒比例混合后，放入沸水加热10分钟，看色泽变化。粮食酒会变黄，酒精勾兑的白酒不会变化。虽然这个方法比麻烦,但是准确率。
3、 Use heat-resistant Huai or test tube, mix according to the proportion of 1G caustic soda and 50g white spirit, put in boiling water and heat for 10min to see the color change. Grain liquor will turn yellow and liquor mixed with alcohol will not change. Although this method is more troublesome, it has the highest accuracy.
四、看标签中的产品执行标准和配料表。白酒执行执准分三类:
4、 See the product executive standard and ingredient list in the label. There are three types of liquor enforcement:
1、液态法白酒标准:GB/T20821，是食用酒精勾兑的，小心购买或饮用;
1. Liquid liquor standard: GB / t20821, it is mixed with edible alcohol, buy or drink carefully;
2、固液混合法白酒标准:GB/T20822，用不高于30%的固态纯粮基酒+食用酒精+香精+水勾兑出来的，也不建议购买和饮用，但好于种。
2. The liquor standard of solid-liquid mixing method is GB/T20822, and it is not recommended to buy and drink with the solid state grain base liquor of 30% higher than that of edible alcohol + essence + water, but it is better than the first kind.
3、固态法白酒标准：有三种:GB10781、GB/T26760、GB/T26761，是用粮食制做的白酒，也就是俗称的纯粮酒。同时还要看配料表，看主要成分。
3. There are three standards for liquor by solid state method: gb10781, GB / t26760 and GB / t26761. They are made of grain, also known as pure grain liquor. At the same time, we should also look at the ingredient list and the main ingredients.
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