Coffee Processing Flashcards

1
Q

Why is coffee processed ?

A

To prepare it for roasting - it removes the fruit and the moisture

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2
Q

How many methods of coffee processing are there ?

A

3

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3
Q

What are the 3 types of coffee processing ?

A

Natural, washed, hybrid (pulped and honey) … process

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4
Q

How does the coffee taste if it is naturally processed ?

A

Sweet - the bean absorbs the sugars contained in the mucilage as the cherries dry out

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5
Q

What is the purpose of a hulling machine ?

A

It separates the coffee bean from the now dry fruit (cascara)

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6
Q

What is green coffee ?

A

The end result of processing coffee (to prepare it for roasting)

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7
Q

Washed process : what happens during fermentation in relation to flavour ?

A

While the coffee cherries are in the tanks, the micro organisms e.g., bacteria expel acids which create more acidic flavours in the coffee

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8
Q

Why are coffee beans dried (in the overall coffee processing) ?

A

To remove moisture

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9
Q

What flavour are washed coffees ?

A

Acidic with a muted sweetness - predictable and balanced flavour

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10
Q

What are the hybrid processes ?

A

Coffee processing which falls somewhere between the extremes of the natural and washed processes.

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11
Q

What are the 4 hybrid methods ?

A

Pulped natural, black honey, red honey, yellow honey

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12
Q

Which hybrid method is best for filter coffee ?

A

Yellow Honey

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13
Q

What happens when coffee is roasted for a long time ?

A

The darker the beans become

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14
Q

What are the first and second crack ?

A

2 audible pops that happen during roasting

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15
Q

Period prior to the first crack is called: ?

A

The drying phase

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16
Q

What happens during the second crack ?

A

The coffee is roasted more

17
Q

What is the coffee like after the first crack ?

A

It will have a strong, aroma, high acidity and a low bitterness

18
Q

What does the second crack signify ?

A

The point where the dark roast begins to taste more burned than roasted

19
Q

What will the beans be like after the second crack if left for a long time ?

A

Dark brown to black colour, with a very shiny, wet or oily appearance

20
Q

What is generally the best roast for coffee ?

A

Medium

21
Q

What is extraction ?

A

The process of brewing coffee (coffee being released from the group head)

22
Q

What is over - extraction ?

A

When too much of the coffee portion is extracted - i.e, shot is too slow (weak flavour) - too fine

23
Q

What is under - extraction ?

A

When too little of the coffee portion is extracted - i.e., shot is too fast (too coarse, bitter)