Canning trial - Easy Grape Juice

My neighbor brought over some grapes that she said she wasn't going to eat before she left on vacation.
My kids weren't eating them so I decided to try my hand at making some easy grape juice that I had heard about on several canning sites. 

Here is what I did:

I put 1/2 cup of washed grapes into each pint jar.  Then I took three cups of water and stirred 3/4 cup of sugar until dissolved.  I poured that equally into the three jars and added plain water up to the neck of the jar.  I wiped the rim of the jar and added my lids.  Then I put them in my water bath canner and brought it up to a boil and continued to boil them for 20 minutes. 

Now the hardest part is to wait a few weeks before opening and trying the "juice".   And if we like it, I will be doing this every year when my grapes are ready.