How To make Granny Fearing's Baked Beans

1 21-ounce can pork-and-beans
1 large onion, -- finely chopped
1 12-ounce bottle ketchup
1 tablespoon yellow mustard
1 1/4 cups packed light brown sugar
1/4 cup molasses
1/2 cup sweet gherkin juice
1 teaspoon apple cider vinegar
Salt and ground pepper 1/2 pound thickly sliced smoked bacon
Preheat oven to 350 degrees. In a 2-quart casserole dish combine all ingredients except bacon; season to taste with salt and pepper. Criss-cross top with bacon strips. Cover with aluminum foil. Bake for 1 hour. Remove foil and continue to bake 30 minutes longer. Serve hot or cold