Is black coffee ground directly from coffee beans? Instant coffee VS pre-ground coffee freeze-dried instant coffee?

Is black coffee ground directly from coffee beans? Of course it's not pulling.

There are a lot of black coffee on the market, such as Colombian coffee, Manning coffee, Brazilian coffee and so on. When you buy it, you should pay more attention to whether it is instant coffee powder or pre-ground coffee powder.

What is instant coffee?

To put it simply, instant coffee is a dry coffee extract.

For instant coffee powder, you only need to add some hot water or hot milk, depending on your preference. Look, you are starting to make coffee. For most people, they worry that instant coffee may not have all the health benefits of regular coffee.

So how is instant coffee made?

Making instant coffee requires roasting and grinding coffee beans like regular coffee.

Then dissolve the ground coffee beans in hot water to extract flavor and aroma.

The coffee solution is dried to extract what we now call instant coffee.

The difference between different types of instant coffee lies in the way the coffee extract is dried.

According to the drying method, there are two types of instant coffee.

The first is spray-dried instant coffee:

Spray-dried coffee is the fastest and most cost-effective type of instant coffee.

In this method, the coffee extract solution is sprayed into a chamber containing very hot air.

The water droplets are immediately exposed to hot air, the water evaporates immediately, and the coffee powder falls to the bottom of the chamber.

Because the coffee extract evaporates too quickly, it loses most of its flavor by spray drying.

In addition, for spray-dried coffee, the texture of the powder is usually too fine for most consumers.

Coffee powder usually has to go through an additional production process to combine grains to form coffee particles.

The second is freeze-dried instant coffee.

At present, freeze-dried coffee is the highest quality instant coffee.

Unlike spray-dried coffee, freeze-dried coffee retains all its flavor and aroma.

The only disadvantage of using this method to produce instant coffee is that the process is more complex and expensive.

In this method, the coffee extract solution is frozen until it is completely solidified.

The frozen coffee extract is then broken into smaller particles.

Smaller frozen particles are dried in a medium temperature vacuum.

As the frozen coffee particles heat up, the frozen water expands rapidly into gas in the process of sublimation.

Once all the water molecules are successfully sublimated, there are dry coffee particles left.

Pre-ground coffee powder is to grind the whole beans of the coffee in advance and keep it in the form of powder. It is very convenient and can save the step of grinding beans. At present, many cafes in the market offer this service, and so is Qianjie. If you don't have the conditions at home, you can talk to the baristas in Qianjie.