Rinse 0.5 kilograms of pears and 1 kilogram of apples thoroughly under running water.
Remove the skin and cores.
Cut into small cubes.
Place the prepared fruit in a thick-walled saucepan.
Pour 1 glass of clean water and place on the stove.
Stirring constantly, cook the fruit until it becomes puree (about 15 minutes).
Wash the lemon and carefully remove the peel.
Grate the zest and squeeze the juice out of the pulp.
Rub the apple and pear puree through a sieve, add juice and grated zest.
Stir, return to the pan and simmer again over low heat for 15–20 minutes.
Cook, stirring constantly, until the mixture thickens.
Pour in 1 kilogram of granulated sugar.
Cook, stirring, until the sugar is completely dissolved.
Remove from heat. The treat is ready.