New 2021 Castle Rock Estate Rieslings released

Castle Rock Estate has released their eagerly awaited 2021 Great Southern regional Rieslings, including a new wine to their Riesling collection.

The new wines comprise the 2021 Castle Rock Estate ‘Porongurup’ Riesling ($26), 2021 Castle Rock Estate ‘Skywalk’ Riesling ($21) and a new medium dry style, the 2021 Castle Rock Estate ‘RS21’ Riesling ($21).

“The Castle Rock Estate Porongurup Riesling captures the pure fruit expression of our unique site along the Porongurup Range. It is a blend of the six Riesling blocks planted on our site, each with their own unique flavour profiles that contribute to the wine’s overall layered complexity,” explained winemaker Rob Diletti.

The wine consists of 100% free run juice, creating elegance and finesse due to the minimal phenolic pick-up from the skins during pressing.  It is fermented cool in stainless steel tanks with minimal winemaking influence to highlight the fruit definition and quality attained in the vineyard.

The 2021 Castle Rock Estate ‘Skywalk’ Riesling is named after the panoramic suspended walkway on the local granite Castle Rock outcrop. 

“This wine offers a great contrast in style to our ‘Porongurup’ Riesling. Although made in the exact same way, we have utilised the medium pressing portion of juice from each Riesling block. This portion comes from the juice closest to the skin and is characterised by lower acidity, more phenolic extraction and ultimately, more flavour.”

The new vintage Castle Rock Estate ‘RS21’ Riesling continues Rob Diletti’s commitment and devotion to Riesling and explores the historic relationship between the variety’s acid structure and natural residual sugar.

“This wine is made from 100 per cent free run juice, cool fermented to retain fruit expression and freshness and then arrested early to preserve some natural residual sugar in the wine. A residual sugar level of 21 g/L (RS21) was achieved, creating a ‘medium-dry’ style Riesling where we seek to find a balance between acid and sugar without either being dominant.”

Distribution & Pricing:

Castle Rock Estate is distributed in NSW by IS Wine, in Western Australia by Fine Wine Wholesales, in Victoria by Prime Wines and direct via their website

2021 Castle Rock Estate ‘Porongurup’ Riesling $26

2021 Castle Rock Estate ‘Skywalk’ Riesling $21

2021 Castle Rock Estate ‘RS21’ Riesling $21

For further information and images please contact:

David Cumming at Define Wine Marketing & Communications on 0414 736 342 or

Rob Diletti, Winemaker at Castle Rock on 0447 531 035 or

Assistant Winemaker Sam Palmer with Winemaker Rob Diletti (Captured at Porongorups by Lee Griffith Photography)

Castle Rock Estate is nestled on the eastern slopes of the Porongurup Mountain and is named after a prominent nearby granite landmark. The vineyard, which sits in Great Southern’s sub region Porongurup, has a cool and elevated northerly aspect, resulting in intensely flavoured wines, particularly Riesling, Chardonnay and Pinot Noir. The vineyard was established in 1983 by Angelo and Wendy Diletti and is now run by their son Rob. Their 200-tonne winery was constructed in 2000 and in 2015 Rob Diletti was named Wine Companion Winemaker of the Year. Rob was a finalist in the 2019 Gourmet Traveller Wine Magazine Winemaker of the Year awards and a finalist in the 2022 Wine Companion ‘Best Value Winery’ Awards.