Steps:

• In a stockpot, simmer plums and water until tender, about 30 minutes. Line a strainer with 4 layers of cheesecloth and place over a bowl. Place plum mixture in strainer; cover with edges of cheesecloth. Let stand until liquid measures 5-1/2 cups, about 30 minutes., Return liquid to the pan. Add pectin; stir and bring to a boil. Add sugar; bring to a full rolling boil. Boil for 1 minute, stirring constantly.,    Remove from the heat; skim off any foam. Carefully ladle hot mixture into hot sterilized half-pint jars, leaving 1/4-in. headspace. Remove air bubbles; wipe rims and adjust lids. Process for 5 minutes in a boiling-water canner.

Steps:

• Preheat oven to 425°. Remove papery outer skin from garlic (do not peel or separate cloves). Cut top off garlic bulbs; brush with oil. Wrap each bulb in heavy-duty foil. Place on a baking sheet. Bake until softened, 30-35 minutes. Cool 10-15 minutes. , In a Dutch oven, heat butter over medium heat. Add onions; cook and stir until softened, 6-8 minutes. Reduce heat to medium-low; cook until deep golden brown, 30-40 minutes, stirring occasionally. , Squeeze softened garlic into Dutch oven. Stir in cider vinegar, lemon juice, balsamic vinegar, mustard, salt, pepper, ginger and cloves. Bring to a rolling boil. Gradually stir in sugar. Return to a boil for 3 minutes. Stir in pectin. Continue to boil 1 minute, stirring constantly. , Remove from heat; let stand for 3 minutes. Skim off foam. Ladle hot mixture into 3 hot half-pint jars, leaving 1/4-in. headspace. Remove air bubbles and adjust headspace, if necessary, by adding hot mixture. Wipe rims. Center lids on jars; screw on bands until fingertip tight. , Place jars into canner with simmering water, ensuring that they are completely covered with water. Bring to a boil; process for 10 minutes. Remove jars and cool.