The thing that bugged me , though , was how much water there really is in a tomato . I started with a 5 qt . stockpot something like 3/4 full of rock hard frozen tomatoes and ended up with 28 ounces ( maybe 3 cups , if that ) of tomato sauce .

Answer the following question: What may happen after filling the pot full of tomatoes ?
I will be surprised by the amount of water in it .