This wine is a roughly 50/50 blend of Shiraz and Mataro. Mataro is a late ripening variety with high tannin and often high alcohol (which is why we like it).  This wine is a truncated version of the more usual GSM blend, but there is an increasing few appearing without Grenache.  The savoury, tannic flavours of the Mataro blend well with Shiraz producing a very intense and drinkable wine.