Domaines Schlumberger – Riesling Grand Cru Kitterle Designation AOC Alsace grand Cru Vineyard Size -- Soil type Volcanic-sandstone Vine varieties Riesling Planting density -- Average vine age -- Vine growing conditions -- Pruning method -- Grape harvesting Handpicked Vinification Fermentation in temperature-controlled tuns, followed by raising on the less for 8 months Maturing --