Is the principle of blending coffee to balance the sweet and sour flavor?

It should be noted that we should also take into account the performance of the coffee machine and the bean grinder. If the coffee machine with low extraction rate, it will be slightly sour, and the acidity will be stronger in Italian concentration, so when measuring the cup, we will try to reduce some acidity and make it a little sweeter, so that the extracted espresso will not be so sour, so as to achieve the effect of sweet and sour balance.

Blending does not force the use of any coffee beans, all need to taste to achieve the appropriate effect, the blending process, as mentioned above, when you can take the initiative to choose coffee beans, it is common to choose a bean with a strong flavor as the flavor core of the mixed bean, and use a bean that is not very strong but with high sweetness to balance the sour taste of the flavor bean, because a good flavor means a certain acidity. Then use a bean with rich fat but less flavor to strengthen the alcohol thickness of this blend. In this case, the more suitable way to match is to choose three beans, no matter how many beans are more experienced and more complicated, so don't be so complicated at the beginning of the match.

In this way, the selection of the proportion and baking degree of the three beans need to be familiar with the beans, use the cup test to find the approximate proportion, and finally use the machine to test, so as to determine the final proportion.

It's a tedious process, but it's fun, because when you drink an espresso whose flavor is determined by yourself, it feels great.

The general principle of blending is the balance between sweet and sour, that is, no matter what kind of beans or how roasted they are, I will first test these beans and feel the sweet and sour feeling of coffee beans!

If you give me two coffee beans now, then I will first test the sweet and sour feeling of these two coffee beans, then use a spoon to take a certain proportion to taste, and then find out the proportion when the two beans reach the balance between sour and sweet. Then use a coffee machine to extract, because people's taste buds have different sensitivity to sweet and sour taste, so the proportion needs to be fine-tuned after extraction with a coffee machine. Finally, the proportion of the coffee machine after adjustment shall prevail.