1 (8-ounce) carton plain low-fat yogurt
2 cups apple cider
1/2 teaspoon celery seeds
5 cups chopped apple (such as Granny Smith, Rome, and/or Gala)
1 cup chopped peeled celeriac (celery root)
1/2 cup coarsely chopped pecans, toasted
8 Boston lettuce leaves (or other lettuce)

Spoon yogurt onto several layers of heavy-duty paper towels, and spread to 1/2- inch thickness. Cover yogurt with additional paper towels, and let stand 5 minutes. Scrape into a bowl using a rubber spatula; cover and chill.

Bring cider to a boil in a medium, heavy saucepan over high heat; cook until reduced to 1/2 cup (about 20 minutes). Cool completely.

Combine the chilled yogurt, cider, and celery seeds in a large bowl, stirring yogurt mixture well with a whisk. Add the chopped apple, celeriac, and toasted pecans, tossing gently to coat. Serve salad on lettuce-lined plates.

Serves 8.