In a large bowl combine hash browns, pancake mix, egg, soup mix, scallions, and rose water. Heat oil on a griddle or large skillet over medium-high heat. Drop hash brown mixture, in tablespoon-sized portions onto hot pan, and cook until golden brown, turning halfway through. Remove from pan to drain and then serve by placing a dollop of sour cream on top of each pancake. To create an extremely special garnish, roll each salmon strip, starting with large end, and place on its side to create a rose-shaped bundle. Place 1 "rose" salmon strip on each potato pancake amid the sour cream. Sprinkle with scallions.