Australian winemaker Brian Croser will address the seminar at this year's Great Riesling Tasting (10am- 4.30pm, 17 March, Royal United Services Institute, London). The seminar will be led by Jancis Robinson MW and the organisers are hoping that there will be an open debate led by Robinson and assisted by Croser. Now in its fourth year, the tasting will be followed by an open session for consumers (5.30-8pm), with an entrance charge of 10. The tasting brings together a clutch of UK importers who want to show the quality and diversity of Riesling. There is expected to be Rieslings from around 40 estates in Australia, Austria, Germany, New Zealand, South Africa and the US. Croser will be showing the 2002 Petaluma Riesling from Hamlin Hill, a south-facing vineyard in Clare, set at 500m. According to Croser, last year's vintage was a Riesling maker's dream: the best since 1980.'