In Luxembourg, in the Vianden area, walnuts  are a typical local product.  The Vianden walnut market has been a key autumn event in the Grand Duchy since 1934. It is held every year on the second Sunday in October and it attracts thousands of tourists and locals. Just before the Market is held, Vianden's associations go out to pick the walnuts, which are then cleaned and dried.

During the Saturday Morning Market, in September 2015, guided by a local producer of walnuts and walnut oil, we discovered the different sorts of walnuts and how walnut oil is made.