Canning Green Tomatoes

I used the larger green tomatoes for canning. I found a recipe on this website:
http://www.5acresandadream.com/2011/11/canned-green-tomatoes-for-frying.html

It is a very simple process. First wash the tomatoes. Then core and slice about 1/4" thick. Pack them very tightly in quart size wide mouth jars. Add 1 tsp canning salt and 1 tsp citric acid. Pour boiling water into each jar. Leave about 1/4" space at top. Put lids on and then process in hot bath for approximately 7 minutes.

I'm going to use these for frying or for other recipes I found such as green tomato chili.