Salmon Mousse

Ingredients

• 3/4 cup plain fat-free yogurt
• 1/2 tsp dried rosemary, crumbled
• 1 pound skinless, boneless salmon filletes
• 1 envelope (1/4 ounce) unflavored gelatin
• 2/3 cup light sour cream
• 1/4 cup drained prepared horseradish
• 2 tbsp grated onion
• 2 tsp grated lemon zest
• 3 tbsp fresh lemon juice
• 1 tsp salt