Press tofu to remove excess moisture. Sauté onion with nori in sesame oil until translucent.
Crumble tofu and sauté with onion-nori mixture until lightly golden.
Remove from heat, combine with 2 tsp tamari and diced celery. Taste and add more tamari if needed. Serve on bread or crackers with a sprinkle of chopped parsley.
Steam tofu after pressing and skip the sauté process. Substitute 1⁄2 cup minced scallions or sweet red onion for cooking onion. Place all ingredients (except celery and parsley) in food processor and blend until smooth.