I couldn't decide today whether I fancied mustard, parsley or onion sauce on our corned beef tonight. When I found your recipe I knew I could have them all and that I had to make it. I might have used double the onion and definately used double the H.E mustard, but otherwise stuck to your recipe.. I used two tablepoons of LogiCol in place of the butter-it worked perfectly. Thanks for a great sauce for our dinner tonight.