Sydney cream, scientific name: Gao. Sydney sauce is a kind of fried sauce made of pears. Generally speaking, fresh pears are chopped, juiced and stored in another container; Boil pear residue in water twice until the taste is exhausted, combine the decoctions, filter, combine the filtrate with pear juice, and concentrate to a clear paste with a relative density of 1.33 ~ 1.38 (20℃). Take 1000g pear extract, adding appropriate amount of water, boiling, standing for precipitation, taking supernatant and filtering; Take 2000 grams of granulated sugar and 3 grams of citric acid, add appropriate amount of water, boil, filter, add to the above filtrate, and concentrate to the specified relative density. The main components of Sydney paste are Sydney, Radix Rehmanniae, Imperata rhizome, etc. Has the effects of nourishing yin, promoting fluid production, moistening lung and stopping bleeding.