In large skillet, combine 4 cups water, 2 tablespoons basil, parsley, 2 tablespoons lemon juice, garlic salt and pepper. Bring to a boil. Add salmon, skin side down. Reduce heat to medium; cover and cook 6 to 10 minutes or until fish flakes easily with fork.
Remove salmon from skillet. Cool 30 minutes or until completely cooled.
In small serving bowl, combine all sauce ingredients; mix well. Cover loosely; refrigerate until serving time.
Just before serving, place salmon on serving platter. (If desired, carefully remove skin.) Garnish plate with basil and lemon slices. Place caviar on paper towel to drain; sprinkle caviar over salmon. Serve salmon with sauce and bread slices.