Canning method
Stem and wash grapes and hold in ascorbic acid solution.
Dip peaches in boiling water 1 to 1 1/2 minutes, cool, peel, halve, pit, and cut into 1/2-inch cubes; hold with grapes.
Peel, halve, core, and cut pears into 1/2-inch cubes; add to holding solution.
Combine sugar and water and bring to a boil.
Drain fruit, add cherries, and mix gently.
Add 1/2 cup hot syrup to each jar, add mixed fruit and more hot syrup, leaving 1/2-inch headspace. Wipe rims, adjust lids, and process in a boiling-water canner according to the source altitude schedule.