Heat a dry sauté pan on medium-high heat. Add cumin and toss for 1 to 2 minutes until cumin is toasted. Use care not to burn. Remove from heat and allow to cool for 10 minutes.
Combine cumin, garlic salt, black pepper and corn syrup in a bowl. Mix well.
Brush glaze over both sides of the salmon. Grill or broil, turning once and brushing liberally with glaze. Cook 8 to 10 minutes, until salmon is at least 150°F.