Preheat oven to 225ºF. Wash jars and two-piece lids in hot, soapy water and rinse well. Place jars in oven for 10 min., then keep in the oven, with heat turned off, to keep warm. Bring a saucepan, half filled with water to simmer and sterilize lids and filling equipment in boiling water for 15 min. Let stand in hot water until ready to use.