Inspect 11 (half-pint) jars for cracks and rings for rust, discarding any defective ones. Immerse in simmering water until jelly is ready. Wash new, unused lids and rings in warm soapy water.

Combine sugar, pomegranate juice, and lemon juice in a large stainless steel saucepan over high-high heat; bring to a boil. Stir in liquid pectin; bring to a full rolling boil, 30 seconds. Off heat, skim off foam.

Pack pomegranate jelly into hot, sterilized jars, filling to within 1/4 inch of tops. Run a clean knife or thin spatula around insides of jars to remove any air bubbles. Wipe rims with a moist paper towel to remove any residue. Top with lids and screw rings on tightly.

Place a rack in the bottom of a large stockpot and fill halfway with water. Bring to a boil and lower jars 2 inches apart into the boiling water using a holder. Pour in more boiling water to cover jars by at least 1 inch. Bring to a rolling boil, cover, and process for 5 minutes.

Remove jars from the stockpot and let rest, several inches apart, for 12 to 24 hours. Press centers of each lid with a finger to ensure lids do not move up or down. Remove rings for storage and store in a cool, dark area.