Preheat oven to 350 degrees Fahrenheit. Remove puff pastry from freezer.

Prepare the cabbage mixture: Add oil to a sauté pan over medium heat. Add the cabbage and onion and cook until soft, about 10 minutes.

Roll out softened puff pastry dough until slightly thinner. Cut into strips 1 inch wide.

Spread cabbage mixture down the center of each strip.

Lift the dough and gently twist.

Bake for 25 minutes or until golden.

Serve with duck sauce for dipping.