Bone China & Porcelain

Are glazed porcelain and bone china dishes similar to glass in that they can be used for meat and dairy (after being washed in the dishwasher, of course)?

Kashering an absorbent countertop, question about sink

I saw in the kashering guide that countertops do not need to be kashered. My countertop is extremely absorbent and does not have a glossy finish on top. It was probably not installed correctly when I moved in. It’s like a kli cheres; if I spill grape juice on...