At a recent larger gathering of people tasting the 2013 Rieslings of Jeffrey Grosset, I was astounded to find that half the group favoured the Alea off-dry Riesling over the Polish Hill.
The 2013 Grosset Polish Hill Riesling starts with citrus flavours, but I taste mainly apple rind in this wine. The wine is quite lean and astringent at this point (maybe this put some people off), but I loved the minerality, preciseness and linearity in this wine. This feature is unmatched in Australia.
The 2013 Grosset Alea Riesling is regarded as an off-dry wine with 9 grams of residual sugar. This is right borderline to the 'trocken' definition in Germany, and Jeffrey Grosset calls it no longer off-dry. The wine has a bigger mouthfeel and some sweetness throughout, but with a fresh finish. What makes this wine less good than the Polish Hill is the fact that it is less precise on the palate and delivers less minerality, a key feature of a top Riesling, in my view.