The great Bordeaux winemakers do it—why not you? Bourassa Vineyards developed a blending and tasting kit to help you create one great wine out of many good ones. Or turn good wine into crap. With a pipette!
Napa Valley Wine Blending & Tasting Kit
Bourassa Vineyards, $69.95
Valentine Gifts for the Five Senses
Self-Medicating with Magical Food
Zodiac Valentine Menu Game
How to Store Foie Gras
When Should Bars Cut You Off?
Fruit Juice: Bottled Hype
I agree with maria lorraine- the most elemental aspect of any wine is based on the quality of the grapes involved. You can't make a "great" wine from a kit- you make a great wine from great grapes.
Everything depends on the quality of the base wines used for blending. You have no idea of the rockgut (or not) this guy might be using. Can't really say you're playing winemaker because fermenting the wine is critical -- this is merely blending.
Go to a winery whose wines you like and do one of their blending sessions for consumers. Take a pass on this -- don't waste your money.