How many milliliters of Italian coffee can be extracted automatically?
How many milliliters of Italian coffee can be extracted automatically?
[extraction time]
The extraction time of the Espresso gold rule is between 22 and 28 seconds, but the extraction time is actually a combination of packing pressure, powder content and grinding degree, which needs to be adjusted by the barista's understanding of Espresso.
[extraction amount]
Few people will change the amount of Espresso 30ml per serving and 60ml double, except for a few Italians who use a single serving of coffee powder to extract only 15ml of coffee liquid.
The more powder, the more can be extracted, and vice versa.
The selection of the amount of extraction powder, coffee powder doubles, your extraction solution doubles, as long as the ratio between powder and solution is the same, usually at 1:2, the flavor of the coffee will be close.
1. Too rough grinding: if the flow rate is too fast, more than 60 milliliters of coffee liquid may be extracted in less than 20 seconds; the concentrated color is light yellow, the texture is thin, and the maintenance time of oil is very short; the taste is high acidity, simple taste and heavy water feeling.
two。 Over-fine grinding: the flow rate is very slow, more than 30 seconds of extraction time, can not extract more than 50 ml of coffee liquid; the color is dark brown, thick; taste bitter, irritating. After the extraction, "a depression of water" is likely to appear on pressed powder, because the water can not pass smoothly through the powder layer and is silted on the surface of pressed powder.
Suggestion: usually in the production of Italian style, you can often use your hands to twist and rub the grinding powder thickness, memory powder thickness feel, convenient to quickly judge the direction of grinding degree adjustment.
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