Is there such thing as high-caffeinated caffee?!
The Robusta varieties typically have twice as much caffeine as the Arabica varieties. And even here there is a wide variation with some Robusta strains reportedly yielding aver 250 mg/cup and some Arabica strains yielding less than 50 mg/cup.
The next variable is the darkness of the roast. The darker the roast, the less the caffeine. Because Robusta varieties are often the basis for dark roast coffees, the above differences begin to disappear in reality.
The third factor is the length of brewing time. The longer the brewing time, the more caffeine per cup. So such methods as the French Press and expresso yield less caffeine than do drip or percolator.
The result is that that extra strong expresso served in working class coffee bars of France and Italy is often very low in caffeine content because they have used the cheaper Arabica beans, extra dark roasted for increased flavor and produced via the expresso machine.
For a high caffeine cup of coffee, try talking to your local coffee bean dealer. Some few know the raw caffeine content of their beans. Use a high caffeine bean with a light roast in a percolator and you can get enough caffeine to get a real buzz.
Don C
Answers: Sure. There are a number of things that affect the amount of caffeine in a cup of coffee.
The Robusta varieties typically have twice as much caffeine as the Arabica varieties. And even here there is a wide variation with some Robusta strains reportedly yielding aver 250 mg/cup and some Arabica strains yielding less than 50 mg/cup.
The next variable is the darkness of the roast. The darker the roast, the less the caffeine. Because Robusta varieties are often the basis for dark roast coffees, the above differences begin to disappear in reality.
The third factor is the length of brewing time. The longer the brewing time, the more caffeine per cup. So such methods as the French Press and expresso yield less caffeine than do drip or percolator.
The result is that that extra strong expresso served in working class coffee bars of France and Italy is often very low in caffeine content because they have used the cheaper Arabica beans, extra dark roasted for increased flavor and produced via the expresso machine.
For a high caffeine cup of coffee, try talking to your local coffee bean dealer. Some few know the raw caffeine content of their beans. Use a high caffeine bean with a light roast in a percolator and you can get enough caffeine to get a real buzz.
Don C