I confess that I've always looked on Bruce Edwards with a degreee of scepticism [1], but Mick's recommendation makes me want to give his (modified) base a try. Are you in a position to publish the actual recipe that you use, Mick ?
** Phil.
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[1] Sorry, this is completely false, and I apologise to Mr Edwards from the bottom of my heart. It was (and is) Pat Chapman whose output I view with a degree of scepticism, not Bruce Edwards.