A dozen years or so back I was on a business visit to Eggborough power station, and stayed in a small hotel nearby. I ordered some of this at the bar, and the barman, very surprised, said "You're the first person I've ever heard pronounce it correctly" which came as a bit of a surprise as I wasn't entirely sure how it should be and had a guess. Of course, he might have been wrong too as I don't think I've heard a definitive pronunciation since.