Ask The Wine Ladies – Is the sediment at the bottom of the bottle all right to drink?
DEAR THE WINE LADIES,
At a recent dinner party the hostess noticed a small amount of sediment at the bottom of the bottle. It looked like tiny pieces of glass. This wine was a white one from Germany. I was a little hesitant to drink the wine however one of the guests assured us the wine was fine and there was no cause to worry. What were those little pebble-like stones and are they really harmless?
– JACKIE
DEAR JACKIE,
You are describing pebble-like stones are commonly referred to as ‘WINE DIAMONDS’ or weinstein. This literally translates to “wine stones’ in German speaking countries. What exactly are they and how did they end up at the bottom of the bottle? These wine diamonds are actually harmless crystalline deposits that naturally separate from wines during fermentation and aging. Potassium acid tartrate, the potassium salt of tartaric acid is the major component of this sediment. The presence of tartaric acid, along with malic acid, are very important in winemaking as they help provide good structure, fruit flavors, crispness on the palate and an increased lifespan of the wine.
The majority of winemakers today recognize that the consumer is alarmed or put off by the presence of these crystalline deposits even though they are harmless. Rather than educating the public, many wineries employ a process called ‘Cold Stabilization’ prior to bottling. This involves chilling the wine to just below zero degrees, causing the potassium bitartrate to crystallize. The wine is then filtered and bottled. Having the wine undergo this process prior to leaving the winery assures a clean filtered wine with no sediment. In cases where the wines do not undergo cold stabilization at the winery, this precipitation of the tartrates could happen during cold weather transport or cold storage conditions in one’s cellar.



The Chåteau Larose Trintaudon you enjoyed comes from the Left Bank. Bordeaux produces both white and red wines with the majority – 90% being red.
Of course there are so many incredible Bordeaux wines to explore and enjoy, wines of suburb quality and at great value including the one you mentioned that we too were very impressed with, Chåteau Larose Trintaudon. The origins of this domain go as far back as 1719 but it was in 1817 that the vineyard was first planted on a gravelly hillside with a terroir that proved to be exceptional for the Bordeaux varietals. Today Chåteau Larose Trintaudon is one of the largest vineyards in the Medoc both in size and production and is recogn ized in the world over as a top quality Cru Bourgeois. The Chåteau was also one of the very first to earn this recognition to be classed as a Cru Bourgeois in 1932 of which the company is very proud. Chåteau Larose Trintaudon also owners of Chåteau Larose Perganson and Arnaud are one of the pioneers in Bordeaux in terms of practicing sustainability and have been credited with the highest evaluation in sustainability and earned the label “Responsible Vineyard” as one of the leaders in France.

























