WSET Diploma D4 covers all things sparkling wine and, to me, was the most daunting outside of D3: Wines of the World.
The reason for this is that while the category of sparkling wine does not have many broad topics, the devil is in the details with many nuanced topics on things like local laws, production volumes, climates, lees aging, and more.
Throw in a major unexpected curveball on my exam (identifying country of origin and grape), and you have the makings for a rather challenging exam all around. So in this one, I wanted to dive into more about what you can expect, how to plan, and some D4 exam day logic as well!
Note: I took the WSET Diploma D4 exam in October 2022. Test material and structure can and does change over time. I am currently waiting on my results (estimated January 2023).