As the owner of more vineyards than any other Alsace producer, Schlumberger lords it over Guebwiller in the south of the region. This Riesling from the Saering vineyard is already showing petrol aromas, and the palate has lost some youthful acidity, replacing it with a light sweetness, flavors of currants and even peaches. There is acidity, though, and this suggests it will mature further.——R.V.(5/1/2005)—— 90