No grape variety transmits the soil as directly as Riesling. On slate it tastes of flint, on granite cool and taut, on limestone of salt and tension. The grape steps back and lets the soil speak.
When I want to show someone what terroir means, I like to do it through Riesling. Six glasses, one evening, Riesling from six different rock types. That convinces more than any amount of talk about terroir.
Six rock types, from the Mosel to the Kamptal: blue and red slate, red sandstone, limestone, granite, gneiss. Each appears twice — as an everyday bottle and as a Grosses Gewächs from the same origin. One click adds the entire case to your basket; individual soils can be swapped out there.