Historic Sonoma Country Home for Sale. I remember those red and white Spreckels Sugar bags that we bought at the grocery store when I was a kid.   Mom and Gram would use boxes of Spreckels powdered sugar to make frosting for yummy cakes.   Back then I didn't know anything about the company or the family that built it.  That changed after I took a look at a grand Sonoma country home listed on the Sonoma MLS.  It was once the glam get-away of the late San Francisco socialite Alma Spreckels, widow of Adolf Spreckels, the son of the company founder Claus Spreckels.  Intrigued---and a confessed sugar addict---I took my camera with me to shoot some pictures on broker tour. The house was once part of a sprawling ranch called Sobre Vista that included 3000 acres on the western slopes of  Sonoma... 02/04/2011