1. First, clean the pine cones that have just been picked, as shown in the figure.

2. Then burn the pine cones in the open space, as shown in the figure.

3. After being cooked, let it cool. At this time, the outer skin of the pine cone has been blackened.

4. At this time, break the charred skin and you can squeeze out the pine nuts inside.

5. finally, wash the charcoal ash on the pine nuts, and you can eat the pine nuts.