How long does grinding coffee take?
More premium hand grinders I would expect to take around 30-45 seconds to grind 18 grams of beans for finer grinding for espresso, and around 20-30 seconds when grinding coarser for cafetiere or batch filter. So how much coffee is the optimal amount to drink to get all the benefits, but avoid the negative side effects? According to the Dietary Guidelines for Americans, it’s safe for most women to drink three to five cups of coffee a day with a maximum intake of 400 milligrams of caffeine.The energy boost and rich flavor are hard to resist, but there’s definitely a line between “fuel for the day” and “asking for trouble. Most healthy adults can safely consume up to 6-7 single espresso shots per day, keeping you under the 400mg daily caffeine cap.Up to 400 milligrams (mg) of caffeine a day seems safe for most adults. That’s about the amount of caffeine in four cups of brewed coffee, 10 cans of cola or two energy shot drinks. Keep in mind that the caffeine content in drinks varies widely.The 30-second extraction rule suggests that a well-balanced espresso shot should take approximately 25-30 seconds to extract when using 18-20 grams of ground coffee and yielding about 30-40 milliliters of espresso.That means 4 to 5 shots of espresso puts you right near the upper safe limit, around 240 to 500 mg total. If your shots are on the stronger side (closer to 100 mg each), hitting that limit only takes about four. If they’re milder, five shots might be okay. Either way, that’s the maximum, not a target.