Shop GSM Wines and other Reds online here at Drinkster Australia. Buy online and earn Drinkster Dollars to spend in the future, with every purchase. If you love Red blends, you’ll love Drinkster! GSM is a blend of 3 different red varietals and is generally made in the Rhone style (France). This blend of wine is surging in popularity in Australia, as it is the perfect drop in our warmer climate. Browse below and get started today.