This is a coarse ground mustard, comparable to the mustards as they were made before steam engines facilitated the milling of the mustard seeds. Once the steam engines got introduced, the coarse ground mustard got forgotten... But they still deserve a place in our modern kitchen. The Tierenteyn Mustard à l’ancienne is not a regular fine mustard with some half-broken seeds in it: during production, a precise balance between the fine and coarse fraction is pursuit. This mustard is made of brown mustard seeds. The Mustard à l’ancienne is very tasty and often used in meat, fish, sauce and vinaigrette-preparations.