Koltz began as a small wine label in 1995 when winemaker Mark Day and Anna Koltunow made their first wine using grapes from the Bottin Vineyard in McLaren Vale. Since that time Koltz has evolved and now specialises in shiraz and shiraz blends from the McLaren Vale region, renowned for its shiraz wines worldwide. Mark Day has worked as a wine maker for Maxwell Wines and Wirra Wirra in McLaren Vale and as a consultant in Italy and France over the last 9 European vintages.

Koltz is a very small producer and all are wines are hand crafted using traditional methods in that they are fermented in open vats and when dry, basket pressed and put to oak. We try to make wines that are individual and reflect our philosophy that wines should be complex but a pleasure to drink at any stage of their evolution.

We are located on a scenic vineyard in the Blewitt Springs region of McLaren Vale and process our wines in a small boutique winery on the vineyard. Our estate wines reflect another phase of Koltz evolution, combining individual attention and European experience with Australian style based on shiraz from our vineyard. We have recently added sangiovese to the vineyard.