Methopyrazines, more commonly referred to as pyrazines, are source of herbal notes in wine that can be quite polarizing for drinkers. Love it or hate it the bell pepper or green peppercorn notes of Cabernets and Carmenère, as well as the green herbal, gooseberry notes of Sauvignon Blanc can be attributed to the presence of pyrazines in the grapes. Exposure to sunlight, delayed harvest-time, and warm weather can reduce pyrazines, but many wine-lovers seek out these green flavors opting for cooler-weather Cabernets and New Zealand Sauvignon Blancs. (Wine/Production)