William R. Watt wrote:
> How long you have to boil down the juice depends on how concentrated it is
> in the first place. You only have to boil down to get sufficient pectin
> concentration which you can test for using ethyl rubbing alcohol. I wrote
> earlier that I put just half a tsp of the alchol in a shot glass and when
> the juice comes to a boil drip 3 drops into the alchohol and jiggle it
> about a bit. If it forms a glob in under 30 seconds there is sufficient
> pectin concentration. If it does not form a glob boil a minute longer and
> test again and repeat until it does. I get a glob the first try. Then
> just add sugar and boil to "cook" the sugar. Regardless if pectin is added
> or not the sugar boil, I assume, will be the same.
>

Does 91% isopropyl alcohol work? It's not as easy to find as the 70%,
but easier to find and cheaper than any appropriate form of ethanol.

Thanks,
Bob