Peel and core the apples. Slice into small pieces and place in a heavy bottom saucepan over medium-low heat.
Cook the apples until they break down, stirring occasionally to stop them from burning.
Use a fork or potato masher to mash the apples into a puree and leave to cool.
Bourbon syrup
Measure the sugar, bourbon, and cinnamon into a saucepan.
Heat over low and stir to allow the sugar to melt into the bourbon. Once this happens, stop stirring and bring the solution to a simmer.
Cook over medium heat until it has reduced by two-thirds. Leave to cool completely (it will thicken as it cools).
Cinnamon bourbon apple ice cream
Whip cream until it is thickened but not stiff.
Fold in the sweetened condensed milk, half the apple puree and the quince jelly.
Pour the mixture into a container, and add blobs of the remaining apple puree and the bourbon syrup on top.
Use a chopstick or the end of a spoon to swirl the puree and bourbon syrup into the ice cream.
Cover and freeze for at least 6 hours. Take out of the freezer 10-15 minutes before serving.
Notes
It is important to use a cream that has a high-fat content (at least 36%) and an apple puree that is not too watery (if you are using store-bought).If your homemade apple puree is thin and watery, continue to cook it to evaporate off some extra water content. Also, pay attention to the kind of apples you use. Trying to make apple puree out of eating apples will take you a while.