Ingredients:
3 pounds green tomatoes, sliced
2 cups apple cider vinegar
2 cups water
1/4 cup granulated sugar
2 tablespoons kosher salt
1 teaspoon mustard seeds
1 teaspoon black peppercorns
2 bay leaves
3 cloves garlic, peeled
1 jalapeño pepper, sliced (optional, for heat)
Instructions:
Prepare the Tomatoes: Slice the green tomatoes into 1/4-inch thick rounds and place them in a large, heatproof bowl.
Prepare the Brine: In a medium saucepan, combine the apple cider vinegar, water, sugar, salt, mustard seeds, black peppercorns, bay leaves, and garlic cloves. Bring the mixture to a boil over medium heat, stirring occasionally, until the sugar and salt are dissolved.
Pack the Jars: Place the sliced green tomatoes and jalapeño slices (if using) into sterilized jars, leaving about 1/2 inch of space at the top.