- Wash and peel the oranges, removing as much white pith as possible. 
- Separate the segments and remove any seeds. 
- If using pectic enzyme, place the orange segments in a bowl and cover with a solution made from 1 tsp pectic enzyme and 1 gallon of water.  Allow the segments to soak for 3 hours, or overnight, stirring gently every once in a while to check on the progress of the enzyme.  When the pith wipes away easily, rinse the segments to remove the remaining pith. 
- Prepare a waterbath canner and jars. 
- If using syrup, combine water and sugar in a saucepan and heat until dissolved. 
- Pack sterilized jars with orange segments, leaving ½ inch of headspace. 
- Pour hot syrup, water, or juice over the fruit, maintaining headspace. 
- Remove air bubbles and wipe jar rims clean. 
- Secure lids and bands, then process in a boiling water canner for 10 minutes, adjusting for altitude (see notes) 
- Let jars cool for 12-24 hours and check seals before storing.