Combine soda and sugar in a large saucepan, bring to a boil on low, stir until the sugar dissolves, remove the saucepan from the stove, cool the syrup slightly, then add the jelly, stir.
Place the peaches in a blender bowl, chop until puree. Pour the jelly mixture from the saucepan into a very large bowl, add the peach puree, nectar, and lemon juice there. Distribute this mass into 4 plastic one-liter containers, cover, and place in the freezer for at least 8 hours.
Before serving, remove the containers from the freezer and let them stand at room temperature for about 1 hour, break the jelly into small pieces with a fork. Pour the stingy mass into a large jug, add ale or soda and stir well (2 bottles per container of jelly).