In a medium bowl, flake the imitation crab meat apart with a fork or your fingers. It’s ok (and even better) to have some larger chunks.
Add the yogurt, scallions, celery, tarragon, lemon juice, mustard, salt, and pepper. Stir well to combine. Serve immediately or chill until ready to serve.
Notes
*You can use cilantro or parsley if you prefer a different herb
TO STORE: Store in an airtight container for up to 4 days. Do not freeze.