Question: how many cups of water will fill a teapot?
Answer: Let's say three guests. Maybe you fill your teapot with 20 ounces of water, about 2.5 standard cups. You pour for your guests and yourself, filling the tea cups about two-thirds full, 6 ounces. So you're pouring about 24 ounces of tea, but the teapot only made 20 ounces.