Each piece is handmade from scratch. We stick with marilyns bod which is an earthenware clay body. We fire to +2,000 degrees Fahrenheit. This means that they are capable to go in the dishwasher, microwave and oven with no issue. They are lead free glazes which makes them food safe. I am the only maker of products and each piece needs to go in a batch of 20-30 to fill the kiln. Which means each piece is going to take roughly 8-12 weeks to complete as they are made to order once you place your order. They can be changed to however you'd like, all you'd have to do is email us.