You know how those Southern dessert recipes go a cup of sugar here, a stick of butter there, eight squares of baking chocolate, or a pint of the season s juiciest fruit. That recipe for blueberry cream pie it s been passed around the church for so long nobody can quite remember who made it first. Or how about the one for red velvet cheesecake you ve been trying to coax out of your sister-in-law for years? She serves it every Christmas Eve, but so...