Three principles of self-brewing coffee: a small amount, fresh-keeping, an appropriate amount of expired coffee beans can not be drunk

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I live next to the coffee shop, buy beans regularly and cook a cup every day. But I'm not a player, and for me, catchy coffee has to be both healthy and safe.

Is it healthier to drink coffee? The key is to choose the right time and drink the right way! "Coffee, Hello" unlocks all kinds of misunderstandings and myths about coffee!

● buys from stores with large sales volume and chooses coffee beans with natural luster and non-deformed body.

I often buy beans in stores with good business, because they sell a lot, circulate quickly, and have no problems of dampness and deterioration caused by hoarding. I cultivate a good friendship with the store, and sometimes get good brewing advice. On the other hand, I usually choose light-roasted beans, because coffee beans are roasted to dark color, which usually goes through a long period of time and high temperature, which may be harmful to the body.

Picking coffee beans is like buying soybeans. Coffee beans themselves contain oil, and fresh beans will have natural luster. You should choose those whose beans are intact, dry and naturally emit bean fragrance, so as to avoid coffee beans that are fuel-consuming, deformed and moldy. Even if the bean body is attached to only a little imperceptible mycelium, it is not fresh enough.

● kitchen tissue + aluminum foil + fresh-keeping box, simple fresh-keeping coffee beans

After buying it home, the preservation of coffee beans is the most important thing. In particular, Taiwan has a warm and humid climate, which is exactly the weather that coffee beans don't like. As long as 26 ℃ and 18.5% humidity, coffee beans are prone to ochratoxin, which may cause urinary tract problems and hepatotoxicity.

In my opinion, the premise of talking about preservation is to "buy a small amount", which can be bought one week at a time, which can avoid food waste and facilitate preservation.

The factors you need to control are light and humidity. Many people are afraid that the coffee beans in the refrigerator will be damp and affect the flavor, and they are also worried that there are other foods in the refrigerator, which will lead to the "mixed flavor" of coffee. At this time, just take a piece of kitchen paper towel, put the coffee beans that will be used for a day, add a piece of aluminum foil paper and roll it up, squeeze out the excess air, put the whole package into a flat shape and put it in a sealed fresh-keeping box, one box is exactly 1 week, the paper towel is used to adjust the moisture, and the aluminum foil can be protected from light. The sealed box is not afraid of other flavor, and it is convenient and fresh to use each time.

Need to pay special attention to, do not put the fresh box in the refrigerator outlet, if the temperature is too low, coffee beans are easy to freeze, produce excess moisture, difficult to grind.

Many people will ask, "can you still drink expired coffee beans?" I suggest that once it expires, don't drink any more, and if the coffee beans obviously smell of fuel consumption, you should throw them away immediately. I still want to appeal to the importance of buying a small amount, and it can also effectively avoid the trouble of hesitating whether to drink expired coffee beans.

I won't waste the coffee grounds after grinding. Coffee grounds can be completely dried without moisture by means of stir-frying, drying or baking, without caking and feeling wet and soft, and loaded into a bowl or cup with little use. the top is covered with a layer of non-woven cloth (if it is too thick to poke a hole) or unsterilized breathable gauze to absorb moisture, fixed with a rubber band and placed in shoe cabinets, toilets or refrigerators, with good moisture absorption and deodorization effect.

● takes a moderate amount of caffeine, don't be superstitious about drinking latte to supplement calcium.

Although studies have confirmed that coffee has health effects such as anti-oxidation, liver protection, and even cancer prevention, please don't forget that these benefits are based on "appropriate" conditions. What worries me most is that some people think that coffee can prevent cancer and drink as water.

For caffeine intake, my family has an unwritten family motto: "Children can eat chocolate in high school, drink coke in high school, drink tea in college, and drink coffee only in society." It shows that Dr. Lin Jieliang is cautious about caffeine. I would like to remind pregnant women, children, people with cardiovascular disease and osteoporosis to limit their consumption and not to drink more than one cup of coffee a day.

And don't think that drinking lattes can supplement calcium by the way. The tannins in coffee will hinder calcium absorption. If you really want to supplement calcium by drinking drinks, you might as well drink black coffee first and then drink a cup of milk half an hour later. In addition, do not drink too hot coffee, many studies have pointed out that regular intake of more than 65 ℃ of soup, it is easy to increase the risk of esophageal cancer, need to pay more attention.

Mastering the principles of selection, preservation and moderation, I believe that coffee will be a good partner in life.

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