I have made Liz Larkin's incredible dessert at least a dozen times since it claimed winner status in the first food52 cookbook. People swoon over it and beg for the simple recipe, which I happily share.
Recently, our friend Jan was over for supper and mentioned that she had made "our" posset and had, on impulse, thrown in a sprig of rosemary while the cream boiled. Jan thought it really amped up the dessert.
I tried this out Saturday when we had some folks over for lunch. Superb. Kudos to Liz AKA our lady of scones - and lemon posset!