Tesco hopes shoppers will fork out up to £100 a bottle for its new range of premium wines.
The retailer is adding 50 boutique wines to its current 750-strong stable.
Prices start at £10, with most in the £15 to £25 bracket.
Tesco said positive customer feedback to the premium wines introduced during last year's range review had prompted it to enlarge its offering.
Jason Godley, category manager for wine, said: "The wine team has relished the opportunity to source and sign up interesting and exciting wines in significant volumes."
Some of the new wines include Jackson Estate Grey Ghost Sauvignon Blanc 2003 and Chassagne Montrachet Lamy-Pillot 2004.
Nearly 200 of Tesco's top stores will be fitted with a new premium wine fixture in bespoke dark wood that allows the bottles to be laid down and incorporates PoS materials.