Mash or chop the berries, as preferred, and add the sugar to them.
Then mash them in a preserving kettle and add the sugar to them.
Cook them until they are quite soft, and then chop them or mash them.
When they are quite soft, drain them in a cullender, and mash them.
Break up and mash them with a potato-beetle, or a rolling-pin.
It is then better to mash them always ...