First, gather the ingredients. Then prepare them for the recipe. Cut the plums in half and remove the seeds. Core, peel, and dice the apples. Chop the figs into small pieces. Mince the onion and garlic. Set aside until ready to use.
In a medium bowl, combine the cider vinegar and sugars. Bring to a boil over a medium-high heat. Add the plums, apples, figs, onion, garlic, and spices. Bring to a boil and then reduce to a simmer. Cook on low heat for 1 1/2 - 2 hours until the sauce has thickened and the fruits have broken down into the sauce. Be sure to stir this sauce frequently to prevent burning.
Remove from heat and allow to set for 10 minutes before pouring into hot sterilized jars and seal with canning lids, making sure to follow canning instructions for a water bath.
I turned the jars over and allowed them to set for 8-10 minutes before turning them upright. This type of sealing works for short term storage. If you plan to store the chutney for more than a couple months, I recommend the water bath approach.