Powell & Son Riverside GSM 2021

GSM stands for Grenache, Shiraz, and Mourvèdre (also called Mataro), a classic Rhône-style blend that's become synonymous with Australian winemaking excellence. This combination creates wines with incredible complexity - Grenache provides bright fruit and elegance, Shiraz adds structure and spice, while Mourvèdre contributes earthy depth and that distinctive medicinal character mentioned in this wine. The Barossa Valley's warm climate is perfectly suited to ripening these Mediterranean varietals, making GSM blends a regional specialty.

This full-bodied GSM is remarkably versatile - serve it at cellar temperature (16-18°C) during cooler months to appreciate its plush, warming qualities and complex tannin structure. In summer, don't hesitate to give it a light chill in the fridge for 20-30 minutes, which will brighten the fruit flavours and make it more refreshing. The wine's robust character means it can handle slight temperature variations while still delivering that explosive palate of dark fruits and spices.

The wine's combination of bright fruit, savoury tannins, and medicinal Mataro character makes it perfect for hearty, flavourful dishes. Try it with grilled lamb with rosemary, beef stews, or Mediterranean cuisine featuring herbs and olives. The blackcurrant and raspberry notes complement game meats beautifully, while the licorice and spice elements pair wonderfully with barbecued meats or aged cheeses. Its textured, savoury profile also works surprisingly well with rich vegetarian dishes like mushroom risotto.

This 2021 GSM is drinking beautifully now, showcasing vibrant fruit flavours and well-integrated tannins that make it immediately enjoyable. However, GSM blends from quality Barossa producers typically develop additional complexity over 5-8 years, with the Mourvèdre component adding more savoury, earthy notes as it matures. If you enjoy bright, juicy wines, drink it within the next 2-3 years; if you prefer more developed, complex flavours, cellar it for 4-6 years.

Powell & Son has crafted a GSM that balances power with elegance, achieving full-bodied richness without overwhelming heaviness. Their use of Mataro (Mourvèdre) as a 'generous splash' rather than equal partner creates that distinctive medicinal undertone that adds complexity without dominating the blend. The resulting wine showcases the Barossa's ability to produce GSMs with both immediate appeal and layered sophistication, making it accessible to newcomers while satisfying experienced wine lovers seeking regional authenticity.