Louis Roederer NV, Champagne, France
Widely available - £35-45
Tasting date - 12/01/2019
Appearance - Pale lemon
Nose intensity - Medium plus
Primary aroma - Lemon, green apple, pear
Secondary aroma - Toast, brioche, yeast, brown bread
Tertiary aroma - None
Sweetness - Dry (off-dry - see below)
Acidity - High
Tannin and nature - None
Alcohol - Medium
Body - Medium
Intensity - Medium plus
Primary flavours - Lemon, green apple, pear
Secondary flavours - Toast, brioche, yeast, brown bread
Tertiary flavours - None
Finish - Long Length
Quality - Very good
When blind tasting sparkling it is important to link the aromas and flavours to a production technique, luckily this wine has distinct autolytic aromas. Going beyond this you should attempt to link the acidity level and primary notes to either a climate or a grape variety/varieties, this is difficult however as many traditional method sparkling wines are made in cool climates with Champagne varieties.
You can use complexity and overall quality to push you towards Champagne however it is only a supporting argument, outstanding sparklings can be made in many places around the world.
In order to push beyond very good the wine would need to have a little bit more intensity on the palate but it is almost there.
NB A student raised a good point, the official R/S is in the official 'off-dry' category. As a general rule due to the balance of the acidity and the wide range withing the 'brut' category both 'dry' and 'off-dry' should be acceptable. Many thanks Simon for the comment.