How much dried garlic do I substitute for fresh garlic?

Yes ... Point taken! And, a good point too.
But I hate dried "anything". Why not buy fresh, pulverize it in your blender with olive oil, and keep it in the cooler in an airtight container?

As Jan Weber pointed out, fresh must not be available for Margaret at this time. Granulated garlic comes in handy.

Why use this "stuff"?
Fresh is cheaper.

Why not just use fresh garlic--the flavor is so much nicer and more seductive.

About half a teaspoon of dried garlic per clove of fresh garlic.