Cabernet Franc is the parent grape of Merlot and Cabernet Sauvignon with aromas of raspberry, bramble, and bell pepper (pyrazines).
Riesling is a white wine grape mostly grown in cool climates, like Germany and the U.S. Riesling wines can be sweet, but also crisp and refreshing.
Syrah is a dark red wine grape currently popular with growers in France and the U.S.; it makes many styles and blends.
Tempranillo is a red wine grape variety currently growing in Spain and Portugal. It's the third-most planted wine grape in the world.