Cut the parchment paper into a circle about the size of the saucepan you will use. Fold in half and then cut a small half circle and when you open it up you now have a circle with a hole in the middle. The hole in the middle to allow some steam to escape during poaching
Place the pears, water, rock sugar, red dates, and longan in a medium or large saucepan. Make sure the pears are in one layer, this will help to cook evenly. Cover with a parchment paper. This will help to prevent discoloration of the pears that often happens during cooking because the pears are not submerged in the liquid. Bring to a boil and then lower the heat to a gentle simmer and let it simmer for the next 25 minutes
The pear will be soft when you pierce with a fork. Sprinkle in the goji berries and let it simmer for another 5 minutes. Remove from the heat
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Notes
Other ingredients you can add to these are: Black dates, ginger, snow fungus. Just to mention a fewYou may substitute rock sugar with raw honey but adding it last when you are ready to eat themI know it may not be easy to find dried longan especially if you live in the U.S., you can either omit or use canned longan and adding it last, but it's not imperative to have longan in the soup