31 votes
Accepted

Why is it not recommended to drink coffee immediately after it's roasted?

Fresh off the roast, coffee has high levels of carbon dioxide and nitrogen (based?) gasses. These gasses will greatly contribute to retro-nasal activity as well as initial flavors (think carbonated ...
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  • 1,409
23 votes

Why is it not recommended to drink coffee immediately after it's roasted?

The flavor and aroma of the beans continue to develop for the first few days after roasting as the beans release gas (this is the reason some retail coffee bags have valves to let the gases out). The ...
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  • 1,753
18 votes
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Coffee Bean Vs Espresso Bean

First of all, there is no difference in the beans themselves. They all come from either Robusta or Arabica plants. The roast doesn't vary either. You can use any kind of roast for your espresso, it's ...
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  • 6,995
18 votes
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How long can I store roasted coffee beans?

I assume you are storing them for a later grinding (likely just before preparing your cups of coffee). According to some sources 1,2,3, the main point is use it within a week. For more than that, it ...
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  • 1,234
15 votes
Accepted

What type of roast has the lowest caffeine content?

In general, darker, arabica roasts have less caffeine. Arabica (as opposed to robusta) inherently has less caffeine in it naturally, and darker coffees have less caffeine since they have been roasted ...
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  • 1,589
14 votes
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How do I get started in roasting my own beans at home?

There are several ways to roast your own coffee at home on low budget: Pan This is one of the extremely minimalistic ways to roast coffee, but the degree of complexity is very high as the coffee beans ...
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  • 1,381
14 votes

How do I get started in roasting my own beans at home?

By far the easiest way to start at home roasting is with a hot air popcorn popper. You can get a used one for $5 at a thrift store or pay approximately $20 new for one. Or perhaps you already have ...
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13 votes
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Why do most coffee shops use such dark roast?

Roasting coffee dark may be used because it is easier to create a consistently flavored bean, with less monitoring and concern for flavor profiles. In the case of Starbucks they are shipping so much ...
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  • 521
13 votes

What is Breakfast/Morning blend?

Breakfast or morning blends are generally a lighter roast, but there is no industry standard for how light of a roast. As for differences between breakfast and morning blends, the key is in the word "...
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  • 1,142
10 votes

Home Roasting with Fresh Roast SR500

There is a goodish guide for your roaster here. I'd also keep in mind that coffee has a cooling period after you "stop" roasting, where it will generally still roast to a darker level (or two). You ...
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8 votes
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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 ...
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8 votes

Coffee Bean Vs Espresso Bean

There is no actual difference between "espresso beans" and "coffee beans"; in reality, they are both just "coffee beans". When you see something packaged as "espresso beans" or "espresso roast" it is ...
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8 votes

Is it necessary to sort beans after roasting?

It will affect the flavor. Whether that's particularly noticeable depends on the bean, the roast you're going for, and how much variance there is in the roast. Whether it matters to you is a personal ...
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  • 306
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 ...
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  • 7,583
7 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 ...
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7 votes
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Is it necessary to sort beans after roasting?

Sorting done during the processing phase of coffee production (prior to roasting) is done in many places and can produce lots of coffee that look very different, but taste almost exactly the same. ...
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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 ...
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7 votes
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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 ...
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6 votes
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Home roaster cleaning and/or seasoning

The roasting chamber of your Gene Cafe is made of Pyrex (heat-resistant tempered glass), and leaving the old oils to accumulate and burn will cause the the inside of the drum to turn black. The darker ...
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6 votes
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Reduce power of popcorn popper for roasting coffee

Rather than playing with electricity and wiring you could actually just move the roasting bed/area away from your heat source and accomplish close to the same thing. I started roasting with a ...
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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 ...
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6 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 ...
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  • 279
5 votes

Where to buy small batches of unroasted beans

I recommend Sweet Maria's. You order online and the beans are shipped to you. They have many different varieties, including Ethiopian.
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  • 457
5 votes

Where to buy small batches of unroasted beans

There are several websites that sell unroasted or green beans in a range of quantities and will ship. I have heard that Costco or maybe it was Sam's Club were selling them as well (albeit in larger ...
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5 votes

Home roasting and ventilation

I finally noticed that the chaff collection unit is actually several pieces that don't fit as well as they could. I took it apart and sealed the seams with high temperature engine gasket sealant. I ...
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5 votes

What is white coffee?

As suggested by several previous comments, there's several things that could be called "white coffee." According to the white coffee article on Wikipedia, and other sources (e.g., coffeefaq, Nescafé)...
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  • 8,497
5 votes

What is white coffee?

White Coffee, popular with drive-thru espresso stands in the Pacific NW, is very lightly roasted coffee that is milled (ground) about like kosher salt. Baristas will brew it in their espresso machine ...
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  • 91
5 votes
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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 ...
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  • 1,455
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. ...
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  • 3,853
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 ...
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