Why it matters
The producer
Weingut Bernhard Mehrlein is a family estate in Oestrich-Winkel whose scale is unusual for a business still run by its third generation. Thorsten Mehrlein owns and operates more than 60 hectares, and Riesling accounts for 97% of the plantings. That concentration gives the range a clear centre: labels may vary by sweetness level, vineyard name and market, but Riesling is the grape carrying the estate’s main work.
The regional profile places Mehrlein among the Rheingau’s largest wineries and describes its expansion as internally generated. The consequence is a substantial vineyard base without a move away from family management: the estate says it tends its vineyards itself and adapts work to each site.
Place and vineyards
Where the wines begin
Oestrich-Winkel sits in the Rheingau, where Mehrlein works south-facing vineyards. For this estate, place appears most plainly through Riesling and through vineyard-designated labels: a named vineyard can stand beside the Rheingau name, narrowing the wine’s origin from region to site.
That matters across a 60-plus-hectare holding. A dry Riesling and an off-dry Riesling can begin with the same central grape, while vineyard names allow bottles from particular places to remain distinct within a large Riesling-led range.
In the cellar
Vineyards and cellar
Mehrlein says it manages its own vineyards and adjusts vineyard work to individual needs. On an estate spread across quartzite, loam, gravel and Rhine sand, that approach keeps the growing decisions close to each block before harvest.
The estate also reports an Eco-Step integrated management system, sustainability-related certification from 2008, and ISO certifications covering quality, environmental, occupational and food-safety management. These are systems for organising the work around the wine; the more immediate bottle consequence is a range built from estate-grown Riesling rather than a collection of purchased styles.
Wines to know
The range in view
Dry and off-dry Riesling form the core range. Vineyard-designated wines add named sites to that structure, so the label can move from a regional Rheingau statement toward a more specific vineyard origin. Some wines are vinified exclusively for partners, meaning availability can differ by market without changing the estate’s Riesling focus.
Calles Riesling is the best-documented white wine in the range. The 2024 version reviewed by Aperitif is entirely Riesling, while the 2021 was judged capable of ageing for six to seven years. That makes Calles a useful example of the estate’s dry-white direction with room for bottle age, rather than merely a young regional wine.
A useful way in
A bottle to begin with
Start with Calles Riesling. It is a documented, entirely Riesling bottling in the 2024 review, and the 2021 vintage was assessed as capable of six to seven years of ageing. Its role is straightforward: it joins Mehrlein’s dry-white direction to the estate’s dominant grape, without requiring a claim that it is the top wine or a single vineyard’s definitive expression.