Preparation materials: olive, pig bone, salt, ginger and monosodium glutamate.

1, wash pig bones with cold water, add a little ginger, boil, and wash blood foam. Don't buy too fat pig bones, just be moderately thin. If there is no pig bone, lean pork can be used instead.

2. Wash the green olives and crush them with a hammer for stewing.

3. Put the washed pork bones, ginger slices and green olives into a rice cooker, then add a proper amount of water and stew for 2 hours.

4. Add a little salt and monosodium glutamate to taste before cooking.

5. Scoop a bowl and enjoy the sweetness.