Transfer the ribs from the refrigerator to the freezer for 45 minutes.
Adjust oven racks to the lowest and upper-middle positions (at least 5 inches [13 cm] below the broiler element). Place a baking stone on the lower rack and preheat the oven to 500°F (260°C). Line a rimmed baking sheet with heavy-duty aluminum foil. Sprinkle ground tea evenly over the bottom of the rimmed baking sheet. Place a wire rack inside the baking sheet over the tea. Place the ribs, meat side up, on the wire rack, overlapping each piece, if necessary. Cover the baking sheet with heavy-duty aluminum foil, crimping edges tightly to seal.
Place the baking sheet on the preheated baking stone and roast the ribs for 30 minutes.
Reduce the oven temperature to 250°F (121°C), leaving the oven door open for 1 minute to drop the temperature. While the oven is open, carefully lift 1 corner of the foil and pour the apple juice into the bottom of the baking sheet. Reseal the foil before closing the oven door.
Continue to roast the ribs until the meat is very tender and begins to pull away from bones, about 1 hour.
Remove the baking sheet from the oven and discard the foil. Carefully flip the ribs bone side up.
Turn on the broiler and return the baking sheet to the oven on the upper rack. Cook the ribs until well browned and crisp in spots, 5 to 7 minutes. Flip ribs meat side up and cook until browned and crisp, 4 to 6 minutes more.
Let ribs cool for at least 10 minutes before serving with plenty of paper napkins.