Combine first 5 ingredients in a large bowl. Combine hot pepper sauce and egg white in a small bowl; add egg white mixture to salmon mixture, stirring well to combine.
Divide the mixture into 4 equal portions, shaping each into a 1/2-inch-thick patty. Heat a large nonstick skillet over medium-high heat. Coat pan with cooking spray. Add salmon patties, and cook 3 minutes on each side or until desired degree of doneness. Serve patties on toasted focaccia.