A few weeks ago I canned apricots and it took forever to get the water to boil. DSH came to the rescue for canning strawberry jam. He got out the two burner camping stove, hooked it up to a propane tank and fired it up. Water was boiling in seven minutes instead of three hours. Yay!
The jars sure are pretty. And the jam tastes great. I've been eating it on home made bread. I made quite a big mess though!