My handmade cups are high fired clay. I finish them with a combination of underglaze, oxides and glazes. They are dishwasher and microwave safe but will last longer if they are hand washed. They are much happier when they are used regularly and their goal is to bring you years of enjoyment.
My cups are individually made so sizes will vary. Wine glasses typically hold 6-8 ounces. Whiskey glasses hold 2 to 4 ounces and the shot glasses hold 1 to 2 ounces. As you use your glass, you will get a feel for how many fills is in a serving or maybe you won't and you will just enjoy your new cup to its fullest. My cups are as different as people are.