Caffeine Content in Coffee - Light Roast VS Dark Roast? Espresso VS Drip?
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- Опубліковано 29 вер 2024
- Many baristas and customers will at some point ask the question: Which coffee has the least (or most) caffeine? It’s a common and simple question, but the answer is not so simple. In this video we will look at the differences between light roasted and dark roasted coffee, as well as some possible caffeine differences between brewing methods (espresso, drip, pour over, etc.)
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It would be dead simple if the manufacturers simply published the info and told us the parameters they used for the tests, but for whatever reason they don't like to talk about it.
Also it's hard to find fat expressed as a percentage in ground pork and whole milk.
I started buying coffee beans in the last two years or so. I usually buy dark roast and have tried about 20 roasters. I only had once the beans as oily as you show. Most of the time they are dark and dry. Occasionally they have a few streaks of oil.
I get dark roast whole beans and brew in every different way there is from espresso to French press to even keurig. Just depends what I’m in the mood for at the moment. But coffee brand wise, I do like my pricey beans like Kona, Misha, Geisha, Devil Mountain, Death Wish, Black Rifle, Jamaica Blue Mountain and everything Starbucks (I know I know I’m a sucker for Starbucks 😂). When I do want to save money and get my bang for my buck my go-to is Bustello. What will NEVER EVER touch my lips is Folgers. God no. 🤢 🤮 nooooope!! Also for espresso I usually do 4-7 shots. I like my ZING BANG POW 💥 🤯 🥊 throughout the day and before bed as well. Anyone else drink coffee before bed?? I picked it up from my family. We always drink our nighttime cup. ☕️ 🫘 and I also like to wait a half hour to an hr after I wake up in the morning to drink my first cup (of many) of the day. Coffee lovers!!! 🤘🏼
Since customers do not generally compare coffees by the same volume, nor do they order them by the weight of the bean, espresso has the least amount of caffeine per serving size.
It’s kind of like when you’re looking at how many calories are in your favorite cookie. They do it by serving size not by volume not by weight.
I understand this is an old video but I should comment on your talk about caffeine. Caffeine is one of the most stable compounds in nature. It does not degrade at the temperatures used in roasting. It sublimates at 178ºC at atmospheric pressure. However, at the high pressures within the beans during roasting (up to 6 atm), it does not sublimate. As the temperature increases, part of the caffeine is lost to the exhaust gas as it is dragged by the water vapor coming out of the beans. Caffeine is only moderately soluble in water at ambient temperature but its solubility increases to infinity as the temperature is increased to 100ºC. In the 1940s, the caffeine used in Coca-Cola formulation was extracted from the stuff scraped from the coffee roasters exhaust pipes. To exactly determine how much caffeine was lost during roasting, one should measure caffeine at each roast degree and calculate the amount of caffeine based on the original green bean mass. The total mass loss should be considered at each roast degree.
That amount of oil in your dark roast is absolutely normal.
Thank you SO MUCH for this detailed explanation! I recently became pregnant and was told I could safely have a certain amount of caffeine per day, honestly I was really confused about the caffeine content in espresso vs. coffee and light roast vs. dark, but your video broke it down perfectly 👍
I'm so glad it was helpful!! Thank you for watching 😊 I hope the pregnancy is going well. All the best!
You said you were linking a video up here and the link wa never shared. thx
The oils release more aroma, A oily bean has 2x more aroma than a non oily medium roasted bean
What about cold extraction ? Cold brew VS espresso. Who has the most cafeine ? I know the amount of liquid is not the same, for a 200ml cold brew and a 20 - 40ml espresso but it’s tricky
The dark roast looks quite normal
Y'all should come to Jamaica and try the blue mountain coffee. Im a tour guide here and a coffee lover myself and what i have noticed is when tourist tries our coffee they alwaya come back. The potency, smell and taste is beyomd compare. Jamaican coffee is your GO TO COFFEE...golgle it 😎
It's ok
I get an Italian roast from Brooklyn Coffee Roasters for my espresso machine. The fresh beans are always glossy with oil.
What happens about CGA??
Great information, thank you! I have an espresso machine at home and have been brewing local, dark/medium beans. The last time I bought a bag the roastery didn't have my usual beans so I purchased a different bag. They were a medium roast and were roasted locally but the beans were from Mexico. Anyway, with the Mexican beans, my sister and I ended up with anxiety which never happened with the other bag of beans. I figured the caffeine was higher with the beans from Mexico because they were a medium roast but now I'm confused. Haha! Do you have any idea why this would happen?
Weeeeeird! I'm not sure honestly... Sometimes changes in our routine can also effect our mental state more than we think.. But it's also possible this coffee had more caffeine than you were used to. Strange!
Was both beans Arabica?
Processing the same?
Maybe the cartel hid drugs in the beans kinda like cheech and chong made a van out of weed. 😂
Seriously tho... talk to the people who sold you the coffee. We can only speculate, where as they should be able to give you a more definitive answer. Please let us know. 😊
Well, with pour over the contact time is generally 5-8 times more than espresso. Based on this, my guess would be that more caffeine in a pour over. Interesting to compare caffeine in a medium roasted lungo and ristretto.
I'm not sure contact time will make a big difference. Because for a pour over the grind is so much more coarse, and it needs that time to properly extract. But with espresso it is so finely ground that we are achieving the same level of extraction in 30 seconds. More surface area exposure in espresso grind
And you extract most of the caffeine quickly in expresso or pore over so time Isn’t the real factor
In James Hoffman's video he used a caffeine tester and the pour over had 50% more caffeine 110 mg for the espresso and 170mg for the pourover
Yes, normal
18g in 36ml out espresso vs the same amount of coffee in pour with 200ml water caffeine is 110mg vs 170mg. The least coffeine is in ristretto 18g in 18ml out, which is approx 70-80mg.
dark roasts get pretty oily. straight after roasting there ís not very much on a neapolitan roast (slowly cooled on air within 10-15 minutes), it moves out of the bean during rest, with a maximum oil on the surface at about 4-7 days.
I appreciate your expertise! Great channel.
Appreciate the kind words! Thanks for watching 😊
Ergo, if one purchases dark roasted coffee by weight, one is getting more coffee per unit weight than a lighter roast.
Is that why I like dark roast? I like the wood fire taste or burnt flavor that my friends hate from the death wish coffie
❤
I find my dark roasts are oily and I really enjoy dark oily roasts haha
So they all have the same amount of caffeine no matter the roast?
Great video al learned a lot. Thank you.
forget the caffeine, tell me the taste. which is better?
ps: by roasting you are removing moisture or water from beans, so obviously if you remove more water you get wolverine/Hugh Jackman (less water, tight)
Depends completely on subject taste preference 😊
So does this mean dark roast is more expensive than medium coffee of bag?
Not really. There are so many more variables to consider with cost. While darker roasts weigh less per bean which can lead to having to pack more beans into each bag to reach the target weight, they also tend to be cheaper coffees for the roaster because they have to sacrifice flavor quality to roast that dark. A roaster may decide to charge more for a darkroast since they lost more weight during roasting.. But usually they don't. And again, usually it's cheaper coffee so it evens out.
thanks for the explanation
Great information
Light roast always has more caffeine in it. You might use more dark roast. But you get more caffeine intake by drinking light roast.
Got any sources to back up your claim? Scott Rao (who is widely accepted as an expert in coffee and coffee roasting) has written in his book (with sources) that the caffeine content after roasting has virtually no change, whether it is a light or dark roast. I'm going to be more inclined to believe him.
@@CoffeeTimeJRthink about it… you’re roasting the bean longer which takes it away. The less you roast the more caffeine.
@chocolatemilk9102 if the words "think about it" were evidence to support any claim then I could just tell you that pigs fly and you just need to think about it to understand. Just because something sounds like a reasonable explanation doesn't mean it's the truth. We already know that the roasting process does not "take" away caffeine. It doesn't get baked out of the bean. This is a myth
I really like it
The oil on the dark roast is totally normal and a good sign of a good roast
It's a sign of a dark roast.. But I guess everyone has their standards for what "good" is
Good stuff
Dark roasted beans weigh less not because it expand, but it's drier. less water = less weight.
That's part of it. But they also expand. You can clearly tell that is the case when you hold a green bean next to it's roasted equivalent. It's also something you notice when packing darker coffees into bags by weight - they feel more full and they are harder to close because 340g of a dark roast contains more individual beans than 340g of a light roast which fills less of the bag.
@@CoffeeTimeJR My friend, but the “expansion” you talked about doesn’t make the beans “lighter,” it makes them less dense. Density and weight aren’t the same. Density is mass per volume, mass is the total amount of stuff there is, and weight is the force of gravity on a given amount of mass. If the dry mass of the bean doesn’t change, neither will it’s dry weight. In terms of becoming lighter, the beans have to lose mass-just expanding won’t do it. If they expand without losing ANY mass, they’ll weigh the same after roasting but take up more space, i.e., volume, i.e., they’ll simply be less dense. But, if the the SAME number of beans WEIGH less after roasting, it has everything to do with loss of mass, i.e., possibly dehydration, and nothing to do with their expansion. Yes, it’s harder to pack dark roasts of equal weight of dark roasts becase the beans are light, but also less dense.
I was always told and therefore assumed that light roast have more caffeine. That being said, I like light roast more only because of the flavor profile. More fruity / flowery rather than roasty and toasted of a dark roast. Thanks for the video ☕
Yea theres a lot of "easy" answers people try and give for this topic! Usually it's not one size fits all :P thanks for watching Don!
Great content!
Appreciate the feedback! Thanks for watching :)
You don’t serve dark roast? Oh my God! I would never go to your coffee shop!
Everyone has their own preference I guess :P But why serve something that has little of the original flavor the coffee bean offers? We pay a premium for the coffees we bring in and roast them so that you can still taste the flavor we bought them for.
Time consuming explanation. 😴
Sometimes things are more complicated than we would like :)