What does 'espresso' mean then? it means express, quick....ie quick hit...if low caffeine beans were used, do you think the 'express' would still sell?Iko wrote:Being informed makes it harder for people to be stupid Roker.
Just a quick two points than you can carry on ingesting "caffine powder"
-darker roast beans used for espresso do have less caffeine than regularly roasted "lighter" beans
-most espresso beans are arabica beans, these, although tastey have half the caffine of robusta beans.
Caffeine
Moderator: Balou
If we're talking caffeine amounts per bean, than sure, but I think we've been talking final product.
"...hence a 60 mL (2 US fl oz) double shot of espresso has about the same caffeine as a 180 ml (6 US fl oz) cup of drip brewed coffee. In coffee brewing terms, espresso and brewed coffee should have the same extraction (about 20% of the coffee grounds are extracted into the coffee liquid), but espresso has a higher brew strength (concentration, in terms of dissolved coffee solids per unit volume), due to having less water." - Wiki
"Well cleary a cup of drip coffee has much more caffeine than espresso - actually about 2-3 times the caffeine (65-120mg) content than espresso (30-50mg). But we cant rest our discussion here, for if you investigate closely, this is not a fair comparison - we need to compare "apples to apples".
To accurately make a comparison between the two, we need to compare concentrations in terms of caffeine per ouce (oz).
In the case of drip coffee, we divide the 65-120mg of caffeine by its serving size, in this case 8 oz - - resulting in: 8.125 - 15 mg per oz.
Whereas in espresso, even though we start off with about a third less caffeine, all this caffeine is contained in just 1oz of liquid or expressed numerically as 30 - 50mg/oz.
So, we can say that although drip coffee contains much more caffeine than espresso in the beverage form, this is due to its much larger serving size (8oz) than espresso.
But when viewed from a volume perspective (oz) - espresso has a much more caffeine than drip based on volume (oz). " - Coffee Chemistry
"...hence a 60 mL (2 US fl oz) double shot of espresso has about the same caffeine as a 180 ml (6 US fl oz) cup of drip brewed coffee. In coffee brewing terms, espresso and brewed coffee should have the same extraction (about 20% of the coffee grounds are extracted into the coffee liquid), but espresso has a higher brew strength (concentration, in terms of dissolved coffee solids per unit volume), due to having less water." - Wiki
"Well cleary a cup of drip coffee has much more caffeine than espresso - actually about 2-3 times the caffeine (65-120mg) content than espresso (30-50mg). But we cant rest our discussion here, for if you investigate closely, this is not a fair comparison - we need to compare "apples to apples".
To accurately make a comparison between the two, we need to compare concentrations in terms of caffeine per ouce (oz).
In the case of drip coffee, we divide the 65-120mg of caffeine by its serving size, in this case 8 oz - - resulting in: 8.125 - 15 mg per oz.
Whereas in espresso, even though we start off with about a third less caffeine, all this caffeine is contained in just 1oz of liquid or expressed numerically as 30 - 50mg/oz.
So, we can say that although drip coffee contains much more caffeine than espresso in the beverage form, this is due to its much larger serving size (8oz) than espresso.
But when viewed from a volume perspective (oz) - espresso has a much more caffeine than drip based on volume (oz). " - Coffee Chemistry
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hardboiled
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