Williams-Sonoma helps fulfill my yuzu fantasies - at times this location has Yakami Orchards Yuzu Juice, which I use in my cooking. I stopped in today to find yuzu-ginger sauce on sale and yuzu-meyer lemon cocktail mix! I purchased the mix more to make yuzu soda than cocktails (though I could add some to dry sparkling wine for fun). I immediately went home and made soda by putting some frozen yuzu peel at the bottom of the glass, poured a few ounces of the yuzu mix, a few ice cubes, and added a MINI can of ginger ale for yuzu-ginger soda.
I find the staff here to be very helpful. I brought down a meat thermometer that I could not figure out how to use the other day and the associate showed me how it works right away, and addressed common questions about that particular product others have had.