PREPARE boiling water canner. Heat jars and lids in simmering water until ready for use. Do not boil. Set bands aside.
COMBINE green and yellow beans, lima beans, celery, onions and red pepper in a large stainless steel saucepan. Add boiling water to cover and bring to a boil over medium-high heat. Reduce heat and boil gently for 5 minutes, until vegetables are heated through.
COMBINE sugar, mustard seeds, celery seeds, salt, vinegar and water in a separate stainless steel saucepan. Bring to a boil over medium-high heat, stirring to dissolve sugar. Reduce heat and boil gently for 5 minutes, until spices have infused the liquid.
DRAIN hot vegetables and pack into hot jars leaving 1/2-inch headspace. Ladle hot pickling liquid into jar to cover vegetables leaving 1/2-inch headspace. Remove air bubbles and adjust headspace, if necessary, by adding hot pickling liquid. Wipe rim. Center lid on jar. Apply band until fit is fingertip tight.
PROCESS jars in a boiling water canner for 15 minutes, adjusting for altitude. Remove jars and cool. Check lids for seal after 24 hours. Lid should not flex up and down when center is pressed. Makes about 5 to 6 (16 oz) pints
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