If you can't find everything bagel spice, you can make it yourself. Combine 2 teaspoons white sesame seeds with 1 ½ teaspoons dried minced onion, 1 ½ teaspoons dried minced garlic, 1 ½ teaspoons black sesame sesame seeds, 1 teaspoon sea salt flakes, and ½ teaspoon poppy seeds. Reserve the extra seasoning for another use.