Our Double Shot Espresso Mugs are for folks who need a bit more of a kick in the pants to get them going in the morning. These tiny but mighty mugs are thrown by hand on the wheel out of either our speckled or red stoneware. They are made using all non-toxic materials. We fire all of our pottery to about 2300 degrees F and make sure itís durable enough for everyday use. We also make sure that all of our pots are food safe and also safe for use in the microwave and dishwasher. These espresso cups hold just approximately 3 oz. of liquid