8
votes
Accepted
Home Roasting with Fresh Roast SR500
I have been roasting with the FreshRoast SR 500 for several months and have seen wildly differing advice from a variety of sources. Recently I found information from a few sources that when combined ...
- 96
8
votes
Why is it not recommended to drink coffee immediately after it's roasted?
Ethiopian coffee ceremony cases from hundred years ago until now, they brew coffee just after the coffee bean cooled, they have no de-gassing time
they solve this smoke like off-flavor problem with ...
- 81
8
votes
Accepted
How much weight reduction occurs after roasting coffee beans?
The roasting process leads to water loss in all types of beans. Most beans start off at about 10-12% moisture and end up around 3%.
My experience gives about 15% weight loss (shrinkage) for light ...
- 711
8
votes
Is dark roast stronger than light roast?
Strength is an interesting wording, but some people use it. Mostly, caramelized or burnt flavors get visible during the roasting process.
Understanding Coffee Bean names as they relate to roast
As ...
- 7,678
7
votes
Why do some grounds float and others sink when brewing by pour over
Bean density varies dramatically with roast level. The more roasted a bean is, the less dense it becomes. My guess would be that less dense beans would have more of a tendency to float and more ...
- 6,455
7
votes
What are the flavor characteristics of under-roasted coffee?
I suppose under-roasting and over-roasting are somewhat relative. I generally prefer a lighter roast (just after the completion of first crack) which might be under-roasted to some tastes.
I've ...
- 289
6
votes
Accepted
What was the cause for the current overwhelming popularity in the brighter, more acidic coffees?
I think there are a number of factors influencing the current situation.
The rise of micro/small and home roasters. This allows people access to fresher coffee. The acidic and bright notes in ...
- 6,455
5
votes
What are the flavor characteristics of under-roasted coffee?
I think this discussion should start with the Maillard reaction; known as caramelization.
When the beans are roasted, a chemical reaction activated by heat reduce sugars (more correctly, hydrocarbons)...
- 7,678
5
votes
Accepted
Roasting my coffee beans
Your first question isn't clear exactly. All drinkable coffee has been roasted first, as raw coffee beans are not edible. I've read that re-roasting beans isn't practical for some reason that I'm not ...
- 1,465
5
votes
Accepted
Is it possible to roast coffee in an industrial glass kiln?
If you can run the kiln at sufficiently low temperatures and have a solution for stirring the beans, yes you could roast coffee beans.
"Drinkable" on the other hand is a hard to quantify term.
...
- 4,053
5
votes
How to judge time between cracks when roasting
Distinguishing between end of first crack and the start of second crack can be very tricky. A lot has to do with the variety of beans being roasted and your heat application.
What I think happened to ...
- 711
5
votes
Accepted
How long does it take coffee beans to degas?
Degassing is discussed a few times. The most cited answer in Coffee SE is probably this question.
In short:
Degassing takes up to 2 to 4 days to achieve drinkable coffee. If you really want to ...
- 7,678
5
votes
"Speed Roasting" from Coffee Tonya: Is it just as good?
Roast times can significantly affect coffee flavors, and a 2 minute roast profile is concerning. While I cannot say I am familiar with the process they are using, I do know a decent amount about the ...
- 1,364
5
votes
Is dark roast stronger than light roast?
Dark roast is stronger taste than light roast, given the same beans.
Bitterness tends to dominate the flavors: Original flavors you can feel on light roast usually disappear with darker roasts.
Dark ...
- 2,283
4
votes
Accepted
Why does coffee lose caffeine as it is roasted?
This is a very common misconception. Coffee does not lose caffeine as it is roasted. It is often misunderstood that darker roasts have less caffeine. Caffeine's melting point is 455F which is well ...
- 6,455
4
votes
How to tell if coffee beans are burnt?
Char - smell and taste. Excessive oil coating the surface of the beans. The extracted coffee will have a flat taste. Hard to describe, but the taste will be predominately "charred" and nothing else.
...
- 401
3
votes
What's the recommended way to roast coffee beans at home?
Two more methods:
Oven roasting. A simple sheet pan and and working oven is all you
need.
Campfire or Open flame roasters. Basically a metal box with a long handle.
Expanding on hoc_age's response ...
- 51
3
votes
Accepted
What's the recommended way to roast coffee beans at home?
The best would be buying a home roaster, but that would be expensive.
corn popper does an amazing job considering how cheap and easy it is.
(hair drying is like corn popper in principle, but will ...
- 46
3
votes
What was the cause for the current overwhelming popularity in the brighter, more acidic coffees?
For me, there are many factors that all led to my preference to medium-light roasts. Any one of these factors by itself is trivial, but together they form a stronger argument.
I wanted to drink ...
- 471
3
votes
Why do some grounds float and others sink when brewing by pour over
One thing to keep in mind is that coffee beans contain CO2. This causes grounds to float and foam. If the beans don't have any CO2 they won't float. This is also a sign that they have gone stale.
- 257
3
votes
Can I reduce harmful terpenes?
Terpenes are the lipids (oils) that give the main flavor to your cup. Therefore, you don't want to reduce them normally. However, if you really want to reduce them, best choice is, as stated thick ...
- 7,678
3
votes
What coffee bean and roast are appropriate with soy milk?
Though it's not primarily your question, my chief problem with soy(a) milk in coffee is with curdling as described in this question. I have noticed curdling especially in higher-acidity coffee -- e.g.,...
- 8,475
3
votes
How much weight reduction occurs after roasting coffee beans?
I roast in a bread machine with a heat gun. I roast 567 g per batch (1.25 #). I roast Ethiopian and Kenyan beans. My weight loss is between 12.7% and 16.2% loss.
I end the roast at about 210 C (410 F) ...
- 31
3
votes
How much weight reduction occurs after roasting coffee beans?
i roast 2kg Colombian beans at a time (last batch begin 2003g) and end up around 1.6kg (last batch end, chaffed and cooled 1608g) i roast in an oven so need to remove chaff manually (i use a cool ...
- 31
3
votes
Accepted
What are the basics of creating an espresso blend?
The basics of blending consists of finding the lost flavors of one specific single origin bean in another bean. Therefore perfecting both (or many) beans in the same cup.
As a result, a good blend ...
- 7,678
3
votes
Caffeine content of different brewing methods
Short answer: No
Slightly longer answer: The temperature, pressure and method of brewing barely impact the amount of caffeine extracted from the bean.
Because caffeine dissolves so readily in hot ...
3
votes
Is it possible to grind then roast?
No. Unroasted coffee beans are denser and wetter than roasted beans and will not grind well. You will break your grinder trying, and even if the grinder succeeded, you'd get more of a mush than solid ...
- 1,567
2
votes
What is white coffee?
If you mean the Yemenite white coffee, then it consists of:
lightly roasted beans.
Hawaij spices mixture (Cardamon, Cloves, cinnamon, ginger root and nutmeg).
- 131
2
votes
How to methodically pick out coffee nuances
I think it simply develops with experience.
Bear in mind that typically those cupping notes are often written down as they carry out (hopefully) systematic cupping sessions. I wouldn't expect those ...
- 21
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