Broccoli is a variety of cauliflower from the Cruciferae family. There are two main types: broccoli with green sprouts, and head broccoli. Summer is the major broccoli season, but it is available at market stalls and grocers practically throughout the year. Choose very fresh, very green broccoli with a firm stem, with the appearance of the bouquet which can vary from green to light purple. But, there should be no yellowish marks.