1. Boil water in a casserole
2. Treat Sydney pears when boiling water: cut the pulp into hob pieces, soak in light salt water, remove and drain the water before boiling
3. Cut the pear skin and pear core into pieces (pears must be washed beforehand)
4. After boiling the water in the pot, add tangerine peel, pear peel and pear core
5. The fire is boiled, and the foam is removed during the period.
6. Turn to low heat and simmer for about 20 minutes, reduce the amount of water by 1/3 to 1/2, remove the slag
7. Add the pear meat and rock sugar, bring to a boil on high heat, turn to low heat and simmer for 5 to 10 minutes, until the rock sugar is completely melted
8. After turning off the heat, add medlar, then
