Quarter and peel the skins off of your pears. Then, slice the quarters into thin slices and dice. You can decide how small you want to make the pieces. Next, zest and juice the lemon into two different bowls or container.
In a 3-quart saucepan, add the diced pears, sugar, water, lemon zest and juice, cinnamon and the allspice. While stirring, bring the mixture to a boil over medium-high heat.
Depending on how much liquid is in your pears will determine how long it will take to reduce the liquid to a syrup consistency. You want the pears to cook at a medium boil and it took my batch about 20 minutes.
Continue to stir during the reduction phase. If you are using a wooden spoon to stir and you take the back of the spoon across the bottom of the pan. If you see the bottom of the pan for 4 or 5 seconds before the liquid fills in the pan's bottom, you can take it off the heat. When checking the syrup, if it is too thin, or the pears have not softened, just reheat for a little while longer to reduce the liquid more.
Move to a glass container with a lid and put it in the refrigerator. I make the pear filling the day before so the flavors have overnight to absorb into the pears.