Prime Minister Malcolm Turnbull's official wine list has doubled since Tony Abbott was in office but industry experts have slammed it as conservative, boring and embarrassing.

When Mr Turnbull retires to The Lodge in Canberra or entertains dignitaries at Kirribilli House in Sydney, he has more than 370 bottles on offer worth close to $9000.

Prime Minister Malcolm Turnbull and wife Lucy sample sparkling wine at the Flavours of Tasmania event at Parliament House in Canberra. Credit:Andrew Meares

But it appears his sommelier may be honouring the age-old tradition of buying the second cheapest bottle of wine available. The average bottle of wine costs just $25.

John Leyshon, president of the Canberra District Wine Industry, said some of the wines on offer were embarrassing.