This is a great, mouth-watering recipe! I have just left the seeds in the tomatoes, while pureeing them.It's up to you. For the sake of this recipe, find the Italian tomatoes. This recipe just won't turn out the way it should, if you don't. San Marzano is the best brand, if you can find it. This recipe has the times printed, but it does get a little involved, to some. The taste will make it worth your while.