2. Add water to the casserole and heat it until it boils. Add ginger slices, onion segments, red dates, mushrooms and pigeons, and simmer for 1.5 hours;
3. 1.5 hours later, add Lycium barbarum and Auricularia auricula and stew for 20 minutes;
4. Peel the yam, cut into pieces, simmer for 20 minutes until the yam is crisp and rotten, and season with salt.