Prior to first use, all pieces must be washed by hand in hot soapy water, well rinsed and allowed to air dry. All pieces are wheel-thrown and hand painted. Some marks in the glaze are natural and expected, as is some crazing. This will not affect the use or durability of the piece over time. The base of jugs, mugs and vases may initially sweat. This is normal and will decrease over time. If using a pitcher as a vase for flowers, change the water daily. Please protect delicate surfaces that may be affected by water marks.