You press on a
grape and you get
wine. Press harder and you get
grapeseed oil. The oil is actually made from
pomace, a by-product of the winemaking process. It contains the
stems and
seeds (sounds like your last
bag, doesn't it,
bones?) and
skins of the grapes.
Apparently, this grapeseed oil is becoming the big thing with chefs. It's a good source of vitamin E and linoleic acid. Linoleic acid is an essential fatty acid that some nutritionists think reduces blood clotting and inflammation. The oil is low in saturated fat. It has about 9%, compared to olive oil's 14%.
It's good for sautéing because its smoke point is 485°. Some chefs use it to make mayonnaise, vinaigrettes, and to cook fancy seafood dishes.