Add the 1 teaspoon caraway seeds and toast for 30–60 seconds, just until fragrant.
Remove from heat and lightly crush with a mortar and pestle, or the back of a spoon.
In the same skillet, dry-roast the ¼ cup sunflower seeds. Set aside.
If using ¼ teaspoon celery seeds, crush them gently in the mortar and pestle, or if you prefer them as a powder, use a coffee grinder.
In a small bowl, whisk together: ¼ cup full-fat Greek yogurt, 2 tablespoons mayonnaise, 1½ teaspoons New Canaan Farms Balsamic Dijon Mustard, 1 tablespoon lemon juice, and 1 teaspoon lemon zest. Season lightly with black pepper
Peel the 2 celery root. Rub it with lemon wedge to prevent it from browning. Grate it or cut it into fine matchsticks (julienne).
Transfer to a large bowl.
Julienne or grate the 1 tart apple and add it to the bowl with the celery root. Toss with 1½ tablespoons lemon juice to prevent browning.
Toss gently so everything stays crisp and fresh.
Pour the dressing over the celery root and apple.
Add the toasted caraway seeds and celery seeds (start with ¼ teaspoon), then gently fold until evenly coated.
Fold in the toasted sunflower seeds and most of the 2 tablespoons dill, reserving a little for garnish.
Taste and adjust the seasoning with
Transfer to a serving bowl and finish with fresh dill or chopped green onion
Notes
Cleaning Celery Root - rinse under cold water and scrub with a vegetable brush. Cut off the top and bottom to create flat, stable surfaces. Use a sharp chef's knife (not a peeler!) to remove the thick outer layer, about ¼ inch deep to remove all the brown skin and crevices. Pro tip: Rub the peeled celery root with a lemon wedge to prevent browning, then grate and toss with additional lemon juice.