Cooking pear water is generally to remove the core, so that the texture and flavor is a little better, there is no difference in efficacy. There is a difference between cooking pear water to remove the core and not remove the core. Pear water after removing the nucleus, the flavor is sweeter, the soup is also clearer. Cooked non-nuclear pear water has astringent flavor, soup is reddish brown. It is recommended to choose snowflake pears to cook pear water. Snow pears are large and round, with tender, juicy and sweet flesh. When cutting, you need to remove the core in the center, but remember not to peel the skin, because the skin of snow pear is very nutritious. If you like to drink sweets, you can add two slices of rock sugar when cooking pear water. There is no difference in efficacy. When cooking pear water, it is necessary to remove the core.