Step 1

Place the vinegar, sugar and 1 teaspoon salt in a medium bowl and add thinly sliced red onion. Massage the onions until well coated with the vinegar mixture. Add oil and set aside for at least 30 minutes.

Step 2

Peel the celery root and cut into thin strips. Core your apples and cut into similar sized thin strips. Place in a large bowl and coat with lime juice to prevent browning. Add the onions and their marinade, minced jalapeno, and cilantro. Toss to combine and top with poppy seeds.