I really liked the "dry tasting note" questions on past TopSomm exams, and I thought it might help some folks to practice the deductive approach with some questions. You can find other exercises by searching for #tastinglogic.
Partial Tasting Note:
White wine. Semi-terpenic nose. Medium plus alcohol (13.5%), distinct phenolic bitterness, and medium plus / elevated acidity.
1) What are all the classic region+varietals this could be? (the "laterals" in MW-speak)
2) For each lateral, what features would rule it out, or make it more probable? I.e. if you are playing the 20-questions game, what questions would you ask to differentiate each lateral?
3) For fun: What non-classic styles could this be?
Link to Answer
Btw, for me in terms of classic white grapes that show noticeable terpenes I would include the following:
*Note that while we generally think of Chardonnay as non-aromatic, there are a few aromatic clones that have made me miss Chardonnay as Viognier on multiple occasions.
The aromatic character of Alsace Pinot Gris tends to be more driven by botrytis. Gruner has detectable levels of a different type of terpene (sequiterpenes not monoterpenes) that causes the classic white pepper aroma.
Torrontés should be high in terpenes not "Semi-terpenic" as described. (As for your question, NOT high in pyrazines if ripe)
Unoaked Chardonnay is generally less aromatic and less bitter.