What the heck is "Nosing?" As I learned recently, a glass of wine - believe it or not -- has a "nose" and it's very important to the taste of the wine, or any wine for that matter. My friend at winefrog.com said "nose" is a wine tasting term that describes how wine smells in the glass. My friend also said different wine grapes produce different aromas and the "nose" is affected by how the wine is made and stored. "Nosing" or smelling a wine is important because most of our perception of taste comes through our sense of smell.