Pork Bone, Chinese Yam, and Corn Soup

Prepare fresh pork bones.

Blanch the bones in boiling water.

Rinse the blanched bones clean with cold water. Add fresh water to a pot. Put the washed bones into the pot. Add scallions, ginger, and goji berries, and start simmering over high heat. Once it boils, reduce to low heat and continue simmering.

Simmer over low heat for about forty minutes. Add the Chinese yam when the bones are nearly cooked. Cook the corn for twenty minutes.

It's done cooking.