Interesting. I would never have thought of the slate acting as a kind of natural storage heater for the vines.
Not that you can get juice from crushed slate, but the image definitely evokes the focused, flinty character of rieslings from the Mosel.
In this most northerly of wine regions (it’s at 50° latitude; the latitudinal range for wine growing is 28°-50°) the bits of slate that litter the vineyards store the sun’s heat, transferring the energy to vines which would otherwise lose the will during the cold night hours. The Mosel river itself also helps to nourish the vines, reflecting the sun on to the slopes and providing that extra bit of warmth that encourages the vines along.
And what about those slopes:
‘Steep’ barely covers it. Look across the river at certain vineyard blocks and they look vertical . The Bremmer Calmont (Bremm is the town, Calmont the vineyard. This is a naming system you will come to recognise if you drink Mosel wines) vineyard on the bow of the river between Trier and Koblenz is the steepest in…
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