The amount of caffeine in a cup of coffee can vary based on the type, serving size, method of preparation, and bean variety, among other factors. Coffee is the biggest dietary source of caffeine.
We will be extracting some caffeine from coffee today! I used regular coffee grounds, but I think the process is actually faster and easier with instant coffee.
On average, an espresso contains around 63 ... Espresso is notorious for offering an almost instant jolt, but the amount of caffeine in drip coffee easily overpowers espresso in a single serving.