premise: How do you store fresh, homemade jam in a jar?
hypothesis: Fill a sterilized jar with the homemade jam until it is about 1/4 inch from the top of the jar. Wipe up any spilled jam on the mouth of the jar with a sterile wipe. Place the lid on the top of the jar and put the ring around the lid. Then turn the top and ring until they are slightly loose and can be turned a little further.