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1
Cut off tops of garlic heads and place each head on a small square of foil set on a baking sheet. Top each head with 1 tsp oil and 1 tsp balsamic. Scrunch foil loosely around garlic heads and roast in a preheated oven until garlic is golden and very soft 45-60 minutes on 400. Let stand until cool. Separate cloves pinching each one to extract garlic. Discard the skins.
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2
In a medium saucepan, combine garlic, wine, water, white balsamic vinegar, and peppercorns. Bring to a boil over medium heat. Reduce heat and boil gently for 5 minutes. Cover, remove from heat and let steep for 15 minutes.
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3
Transfer garlic mixture to a dampened jelly bag or a strainer lined with layers of damp cheesecloth. Let drip 30 minutes. Measure 1 2/3 c of garlic juice. If you don't have the required amount add up to 1/4 c dry white wine or water.
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4
Meanwhile, prepare canner, jars and lids.
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5
Transfer garlic juice to a large deep saucepan. Stir in lemon juice and sugar. Over high heat, stirring constantly, bring to a full rolling boil that cannot be stirred down. Stir in pectin. Boil hard, stirring constantly, for 1 minute. Remove from heat and quickly skim off foam.
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6
Quickly pour hot jelly into hot jars leave 1/4 in head space. Wipe rims and put lids and rings on.
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7
Place in canner, bring to boil and process 10 minutes.