Eating In

1 lb red grapes
1 cup apple cider vinegar
1/4 cup water
1 cup granulated white sugar
1 cinnamon stick
1/2 vanilla bean
1/4 teaspoon cloves
1/4 teaspoon black peppercorns
1/8 teaspoon yellow mustard seeds
Wash the grapes and remove from the stem. In a small saucepan, combine vinegar, water and sugar. Place over high heat and bring to a boil. Place spices into the bottom of a quart jar. Put the spices into the jar and add the grapes. Pour the hot vinegar over the grapes. Allow to cool. Put a lid on the jar. Leave them for a week or so before serving.