Some easy pear preserve recipes are the pear preserve recipe provided by the National Center for Home Food Preservation and the Countryside Pear Jam recipe on About.com. Both recipes require a boiling water canner apparatus in order to process the pear jam.
The apparatus is a pot with a wire rack that is designed to suspend the glass jam jars within the pot while they are being processed.
The NCHFP pear preserve recipe calls for 3 cups of sugar, 2 1/2 cups of water, 6 medium pears and 1 thinly sliced lemon. Mix together half of the sugar and the water and cook the mixture in a saucepan over high heat for about 2 minutes. Cut up the pears and add them the sugar water mixture. Reduce the heat and cook the pears for 15 minutes. Add the rest of the sugar and the thinly sliced lemon and cook the mixture for an additional 25 minutes. Refrigerate the mixture for anywhere between 12 and 24 hours.
Heat the fruit again and transfer it to sanitized glass jam jars. Leave 1/4 inch of open space at the top of the jars. Process the jars in the boiling water canner for 5 to 15 minutes.
The Countryside Pear Jam recipe requires 8 cups of chopped and peeled pears, 4 cups of sugar, 1/2 teaspoon of ground cinnamon and 1/8 teaspoon of ground cloves. Pour all the ingredients into a saucepan and simmer them for 2 hours. Process the jars for 11 minutes.