You can find walnut wine in high-end delicatessens, online, at markets or even in local supermarkets.
A traditional aperitif which used to be very popular, walnut wine is still made by locals, although some distilleries sell their own brand of walnut wine. Walnut wine is an aperitif made by steeping green walnuts in wine and brandy. The resulting drink is around 16% and should be drunk very fresh as an aperitif or desert drink. It is the ultimate traditional aperitif from the Périgord countryside, although walnut wine can also be found in other regions. As well as being a good way to quench your thirst, walnut wine is also attributed with medicinal properties such as aiding digestion and cleansing the body. Walnut wine is made using green walnuts collected from the end of June (Saint-Jean walnut) until 22nd July (Sainte-Madeleine walnut). The best walnuts collected are the Saint-Jean walnuts (around 24th June) because they are still green with milky, soft kernels.