2007 Riesling Grand Cru Kastelberg, Gresser

Grand Cru Kastelberg is the only one of Alsace's finest vineyards are located on the slate. This rock is made up of sedimentary layers of clay particles of easily weathered minerals. Typically the rock has been transformed to become hard, brittle and flakey. Because shale releases much minerals, while it is dark and well drained, the vines on Kastelberg gives a unique character to the grapes which ripen perfectly.

2007 Riesling Grand Cru Kastelberg from Gresser in Andlau has developed aromas of licorice, citrus and minerals with a hint of cardamom, acacia and smoke. The flavor is quite full with layers of ripe fruit, stringent acidity, excellent structure and absolutely first-class balance. The aftertaste is fresh and very, very long. Price: € 20.

2005 Riesling Grand Cru Kastelberg Vielles Vignes, Guy Wach - Domaine des Marronniers

Have you heard of Guy Wach and Domaine des Marronniers? If not, you're in good company, because of all the top producers in Alsace, Guy Wach is the most discrete. Maybe it's because his firm is small and situated in Andlau, the village with three celebrated Grands Crus, including the absolute pinnacle - Grand Cru Kastelberg. Kastelberg consists of shale that is rich in easily dissolved salts. The soil heats up easily, while clay minerals which are interspersed in the shale layers hold a lot of water that prevents the maturation from being blocked in periods of drought. Shale simply make the grapes ripen perfectly every year.

2005 Riesling Grand Cru Kastelberg Vielles Vignes is golden yellow and viscous. The aroma is complex and developed with a little botrytis, anise, smoke, honey, ginger, roasted almonds and Christmas spices. The flavour is full bodied with some sweetness, crisp and supple acidity and a very long finish. A wine with rare complexity! Price: € 15.