Thanks Harry!Mike , this has been a closely guarded secret for many years. Hendersons is, or was, a small family business and they made a small volume of relish each month. This was sold around the Sheffield area only and still is. I now live in Huddersfield, which is less than 30 miles away, and it is rare to find it in shops here.
Once you have tried Hendersons you won't want any other, it has a taste all its own.