Ingredients

  • 3 tablespoons olive oil
  • 1 medium onion, coarsely chopped
  • 2 cloves garlic, finely chopped
  • 12 ounces celery root, peeled, cut into matchstick-size strips
  • 1 pound Swiss chard, stems trimmed, leaves cut into 1/2-inch-wide strips
  • 2 teaspoons fresh lemon juice