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Over Extraction occurs when the water is in contact with the ground coffee for too long and too
much of the coffee soluble are extracted than is desirable. A harsh tasting bitter brew will result.
Freshness Coffee is best enjoyed as soon as it has been brewed. Oxygen in the atmosphere
causes the taste to rapidly deteriorate and the beverage loses its aromatic oils and may soon
become sour, flat and lifeless. Freshly brewed coffee should be consumed within 30 minutes if left
on a hotplate and should never be reheated.
The quality of the brewed coffee beverage will depend on several factors, all of which are important
to produce the perfect cup of coffee:
1) Grind size of the coffee
2) Quantity of coffee used
3) Water quality
4) Water temperature
5) Contact (infusion) time
6) Type of brewing method used
7) Hygiene and cleaning practices
* Grind size:
Over-extraction can occur if the grind is too fine for a particular brewing method and under-
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