Dehydrate: various processes to remove water content from food, mostly to prolong shelf-life. Though there are more than 30 varieties of this herb, the most popular are curly-leaf parsley and the more strongly flavored Italian or flat-leaf parsley. Fresh curly leaf parsley is widely available year-round, while Italian parsley must sometimes be searched out in gourmet produce markets. Parsley is sold in bunches and should be chosen for its bright-green leaves that show no sign of wilting. Dried parsley is available in the spice section of most supermarkets but bears little resemblance to the flavor of fresh. Parsley is an excellent source of vitamins A and C.