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Causes and effects of bubbles produced by coffee brewing-semi-automatic coffee mechanism

Published: 2026-04-05 Author: World Gafei

Last Updated: 2026/04/05, First, the causes of bubbles. 1. Coffee beans are relatively fresh: after raw coffee beans are roasted into ripe coffee beans, coffee beans will contain a lot of carbon dioxide, so when the coffee beans are too fresh, there will be a lot of bubbles in a layer of coffee oil on the surface of the coffee made by a semi-automatic coffee machine. 2. When picking up coffee, the distance is too large: if the coffee machine you use belongs to a tall cup

1. Causes of bubbles

1, coffee beans are relatively fresh: coffee beans are roasted into coffee beans, coffee beans will contain a lot of carbon dioxide, so when the coffee beans are too fresh, the use of semi-automatic coffee machine made out of a layer of coffee grease There will be a lot of bubbles.

2, the distance when receiving coffee is too large: if you use the coffee machine belongs to the high cup version, then the distance between the brewing head and the middle of the waste water tray is larger, when we use the semi-automatic coffee machine to make coffee, because the distance between the cup and the brewing head is larger, it will also splash some bubbles in the coffee liquid.

Second, the impact of bubbles in coffee on coffee

1, taste: coffee beans are fresh when the bubble, it also means that there will be an impact on the taste, of course, this effect is not the bubble itself, but to prove that the coffee beans are too fresh, the coffee produced will have a little astringency.

2, beautiful: there are bubbles in the coffee is mainly affecting the beauty. When we use bubbly coffee to make cappuccinos and lattes, after a while, the bubbles on the surface of the coffee will burst, causing the surface of the coffee to become a small pit, making the coffee ugly.

Source: Know Coffee

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