How long can coffee be kept

Coffee is a common drink. Many people like to drink coffee, especially office workers. Most coffee is brewed and drunk immediately. However, we often encounter this situation. Sometimes the coffee is not finished. Some people put it in the refrigerator and drink it the next day. But sometimes more coffee is brewed and cannot be finished. It is a pity to throw it away directly. How long can coffee be kept?

Generally speaking, it is best to drink instant coffee as soon as possible after brewing. Although overnight coffee will not produce carcinogens, it is still unhealthy to drink. If unsweetened black coffee is left in the refrigerator overnight, the main problem is that it is not fresh and the coffee flavor is destroyed; if the coffee is added with sugar or milk, and it is not drunk immediately after purchase, or even continued to be drunk overnight, the problem is more serious.

Coffee is often added with sugar and milk. If you don’t finish it right away, it will easily go bad, and sugar is a favorite of bacteria! It is recommended to use a stainless steel thermos cup to store coffee to reduce bacterial growth, but it is still best to buy and drink it now!

Can I drink coffee overnight?

As for the question of whether overnight coffee can be drunk, whether it is overnight water or overnight coffee, the water quality will deteriorate if it is left for too long. If boiled water is boiled multiple times, the nitrite content in the water will increase. The same is true for coffee, so it is not recommended to drink repeatedly heated coffee.

In addition, the composition of coffee aroma is complex and diverse, containing more than 900 different aroma substances, which will be released after heating and will be destroyed when exposed to light and oxygen. So when coffee is stored for a long time, its aroma will not be as strong as when it is fresh. The aroma components of coffee are the reason why coffee makes people feel happy, concentrates their attention and improves their work efficiency. If coffee loses its aromatic components, its original refreshing effect will be greatly reduced. Therefore, it is not recommended to drink overnight coffee.

Milk spoils easily and overnight coffee is not fresh

The first reason is that milk is rich in protein and can easily spoil or even become corrupt. Everyone knows that fresh milk should be consumed as soon as possible after it leaves the refrigerator, but people forget that latte also contains a lot of milk. Whether it is iced latte or hot latte, it will go bad if left at room temperature for a long time. Therefore, if the latte has been on the table for several hours, even if it is put in the refrigerator afterwards, it has actually gone bad and may cause gastrointestinal problems such as diarrhea.

If sugar or milk is added to coffee every day, the possibility of it going bad and breeding bacteria is higher.

Sugar is the favorite of bacteria. Overnight coffee has more bacteria.

As for the second reason, nutritionist Song Minghua pointed out that sugar is a nutrient that bacteria particularly like. If coffee with sugar is left idle for too long, it may become a culture dish for bacteria. Even if you store it in the refrigerator, don't forget that the refrigerator is not sterile, and coffee cups are usually not sealed, so bacteria will continue to grow.

Freshly brewed coffee is meant to be drunk right away so that it is fresh, and its taste and flavor are at their best.

It is best to use a thermos cup to preserve it when it is brewed and drunk.

In short, the hygiene and taste of overnight coffee will be greatly reduced. I would like to remind everyone that it is best to brew coffee and drink it immediately! If you really cannot finish it immediately, you can put the coffee in a stainless steel thermos cup and use its sealing and heat-insulating properties to reduce bacterial growth. However, storing it in a thermos cup is only better than keeping it at room temperature, which does not mean it can be stored for a long time. It is still better to drink it up as soon as possible to be healthy!

How much coffee should you drink every day?

Many people drink coffee regularly, but do you know the benefits and disadvantages of drinking coffee? The caffeine contained in coffee has a mild central nervous system stimulating effect. Drinking it properly can reduce fatigue, enhance memory, reasoning and intelligence, and also increase the acuity of auditory and visual reactions. However, long-term excessive caffeine intake may cause health problems such as osteoporosis, high blood pressure, heart disease, weight loss, and premature birth.

So, how much coffee is appropriate to drink every day? People who like to drink coffee and those who need to socialize are advised not to drink too much coffee. 2-3 cups a day is appropriate at most. In principle, no matter what type of stimulating beverage, no more than 3 cups a day is appropriate.

For people who drink excessive amounts of coffee for a long time, it is important not to reduce the amount of coffee they drink too suddenly, as this can cause symptoms such as migraines or lead to bad temper. It is best to take a gradual approach, reducing your intake slightly until you are down to 3 cups or less each day. If you experience a headache during the reduction period, maintain the current dosage temporarily and continue to reduce the dosage when the pain subsides.