Bleasdale has a long history of producing fortified wines and thanks to the foresight of previous winemakers, some pretty good stocks.
One of the main features of Bleasdale fortified wines is the maturation conditions. Langhorne Creek is quite a cool maritime climate, which helps retain freshness and acidity in the grapes as well as maturing wines.
Old oak barrels are stashed high into the rafters under the hot tin roof to encourage evaporation and concentration, but Langhorne Creek is significantly cooler than many other traditional fortified regions so freshness is largely retained.
This Grand Tawny is Grenache dominant, but is blended with Shiraz, Red Frontignac, Tinta Madeira, Tinta Roriz, Verdelho and Touriga.