For the cherry sour cherry jam, put cherries and sour cherries with the Amaretto and the jam sugar in a pot and stir well, let stand for about 3 hours.
Then bring to a boil and boil until bubbly, about 4 minutes, until the jelly test is done. Skim well while boiling. Pour boiling hot into well-cleaned twist-off jars and seal. Keeps for at least a year.