An average 8-ounce (240 ml) cup of brewed coffee contains about 95 mg of caffeine, but this can range from roughly 70 mg to over 140 mg depending on the coffee type and brewing method. Espresso has about 63 mg of caffeine per 1-ounce (30 ml) shot, with double shots containing about 126 mg. Instant coffee usually contains between 60-80 mg per 8-ounce cup. Decaffeinated coffee still contains a small amount of caffeine, typically 2-15 mg per 8-ounce cup. Cold brew and Turkish coffee tend to have higher caffeine, with cold brew ranging around 150-200 mg per 12 ounces and Turkish coffee averaging about 150 mg per 2.5 ounces.