Thanks all...I'm gonna take up Winged One's offer of posting me some! You're all so lovely on this site...!!

I was going to substitute it for mustard Bren but wasn't sure if it would keep as long...

Two Sheds, I have searched out Tesco's here...huge branches..as well as other shops and had no joy. It can be impossible to get some ingredients here...you'd think we lived in the Outer Hebrides!