Introduction to the operating instructions for the cleaning of the brewing head of the Italian Delon coffee machine

Introduction to the operating instructions for the cleaning of the brewing head of the Italian Delon coffee machine

In 1570, when the Turkish army besieged Vienna and failed to retreat, a bag of black seeds was found in the Turkish army's barracks. No one knew what it was. A Polish man who had lived in Turkey took the bag of coffee and opened his first coffee shop in Vienna. At the end of the 16th century, coffee began to spread into Europe on a large scale through Italy in the name of "Islamic wine". It is said that at that time, some Catholics thought coffee was a "devil's drink" and encouraged Pope Clemon VIII to ban it, but after the pope tasted it, he thought it was drinkable and blessed it, so coffee became more and more popular in Europe.

At first, coffee was expensive in Europe. Only aristocrats could drink coffee, and coffee was even called "black gold". Until 1690, a Dutch captain sailed to Yemen and got some coffee seedlings, which were successfully planted in Indonesia. In 1727, the wife of a diplomat in Dutch Guiana gave some coffee seeds to a Spaniard in Brazil, where he planted them with good results. The climate in Brazil is very suitable for coffee growth, and coffee has spread rapidly in South America since then. Coffee, which has fallen in price due to mass production, has become an important drink for Europeans.

Through the coffee machine temperature and pressure measuring instrument, we check the temperature and pressure of each machine to ensure that the temperature and pressure do not affect the experimental results, the temperature and pressure test results are shown in the table below.

In order to ensure the consistency and reliability of coffee taste, three coffee experts formed a jury.

In order to make the test results more fair, the same expert was designated to extract coffee and make cappuccino in this test. The coffee used in the experiment was a unified Italian blend of coffee beans, and the experimental time was the 22nd day after baking.

The espresso of each group will be randomly assigned to the judges, who will then use the standard espresso score of 1mur10 (1 very bad, 10 very good) to compare the following factors of coffee:

Coffee secretes oil color, consistency, persistence, taste balance, technical balance, overall taste / impression.

The three coffee judges scored the three groups of coffee, and then summed up the final score for each group. At the end of the 19-day trial period, the scores of each group were calculated. Ratings and comments are also shown below.

The conclusion of the test shows that it is obvious that the coffee machine is clean and the taste of espresso will be greatly improved. The final conclusion is that cleaning once a day is obviously better than other parameters!