The unique glaze on our Koko hot chocolate mug is from being hand dipped giving each piece a different design.  This one has a milk white reactive glaze, so you may get a light speckled finish or a mottled look, depending on where the item was placed in the kiln.These mugs are:Dishwasher safe.Microwave safe.Food SafeOven ProofOur pottery is designed in the UK and created under a Fair Trade scheme to help sustain and grow the community of artisan makers.