Reh Kendermann Terroir Riesling Kalkstein is an alcohol-free Riesling from the Pfalz, made from 100% Riesling grapes grown on Kalkstein (limestone) soils. Kalkstein is a German viticultural term for the mineral-rich limestone bedrock found across parts of the Pfalz, and its place in the product name marks this as a soil-specific expression within the brand's range.