Which one of these is NOT a Chardonnay?

The identification of which wine is not a Chardonnay involves understanding the characteristics and origins of each of the listed brands. Raeburn, Logan, and Falcons Perch are renowned for producing Chardonnay wines that exhibit the grape variety's typical features, such as crisp acidity, fruit-forward flavors, and a wide range of stylistic expressions from oaked to unoaked.

Giesen, on the other hand, is primarily known for its production of Sauvignon Blanc, particularly from New Zealand, where it has gained a reputation for vibrant, aromatic white wines. This distinction in grape varietals helps to clarify why Giesen does not produce Chardonnay and is the correct answer to the question. Understanding these details about the producers and the types of wines they specialize in is essential for anyone studying wine categories and varietals.