Soak the fruit in the stoneware jar with rum, by alternating sugar, fruit, and rum. So basically, pour some the sugar, top with some of the fruits, then pour some of the rum. Repeat this steps alternating one to another until all ingredients used up.
Cover the stoneware jar with plastic wrap then top with the lid of the jar, which then you cover it with plastic wrap as well.
Place the jar in a cool area of the house (not fridge), such as under bed or cool and somewhat dark storage room/pantry and leave it for 3 months.
Your fruits will be soften and changed in colors once ready. You can check it once awhile after a couple of weeks being stored.