There are many coffee chain stores in the streets and alleys, and most of the cooked coffee grounds are thrown into the garbage bin. In fact, they have many functions. Most shops are happy to provide unused coffee grounds, so you might as well collect this free resource, reduce garbage and make full use of it!
Wang Yuwen, an assistant professor at Taiwan Province Academy of Agricultural Sciences, who is known as the "Doctor of Coffee", said that the most common use of coffee grounds is to put them into tobacco ash tanks for deodorization. Because the volume of roasted coffee beans is at least 65,438+00% higher than that of raw beans, the internal gaps become larger and become porous structures, which can produce moisture absorption and taste absorption effects.
But before using coffee grounds, the first thing to do is drying, which can be done by exposure, oven or microwave oven.
The simplest way to deodorize or dehumidify dry coffee grounds is to use it as a dehumidifier. Chen Yingru, a domestic expert, pointed out that 6 minutes of coffee grounds can be packed in a plastic bag, and the whole bag can be put in the closet, under the sink and other places by poking some small holes, and then replaced when the coffee grounds are a little caked or even moldy; In addition, when it is used to deodorize refrigerators or cars, it is packed in a pudding box, covered with a layer of napkin and tied with a rubber band, so you don't have to worry about falling over.
Wang Yuwen added that, especially after the renovation of the new home, there will be a heavy smell of paint. Compared with using pineapple peel and watermelon peel to absorb odor, if you switch to coffee grounds that will not cause ants, cockroaches and mice and will not affect environmental hygiene, it will also emit a faint aroma, which can be said to be a better choice.
However, if you put coffee grounds in the cupboard, remember to change them regularly every week. If you put them in the car (high temperature environment) or refrigerator (low temperature environment), it is not easy to have the problem of mildew. Many people will also scrub their hands, tables and pots with rough coffee grounds to achieve a clean effect. Chen Yingru shared that after being softened by microwave heating, the soap was remolded by adding coffee grounds to become a coffee soap with both coffee flavor and exfoliating effect.
There have also been baristas sharing experiences. They will wash their hair with coffee grounds as a natural dye after soaking in water, and the dyed hair color is yellowish brown. But because it is natural and fades quickly, it needs to be washed every day to keep the hair color.
Wang Yuwen emphasized that no matter what purpose coffee grounds are used for, they can eventually be made into organic compost. Many people will plant flowers at home and even grow organic vegetables. The most worrying thing about making organic compost at home is the smell and attracting mosquitoes, but there is no such problem in compost fed with coffee grounds and earthworms.
(Article Authorization/Changchun Monthly)
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