In large (at least 8 cups) microwave safe bowl or microwave safe batter bowl, place sugar, corn syrup, salt, and water. Stir.
Microwave on high for 4 minutes. Stir.
Microwave for 9 minutes more.
While that is cooking, place egg whites in a large very clean mixing bowl (stand mixers are ideal for this). Beat until stiff peaks form. Set aside until syrup is done cooking.
Carefully remove syrup from microwave using potholders. Place on a potholder or folded towel next to your mixer. Turn mixer back up to high and slowly pour a contiuous but very thin stream of syrup into the bowl while it is mixing until all syrup has been added.
Add vanilla while continuing to mix.
Mix for 4-5 minutes more or until divinity loses it's sheen and begins to hold it's shape.
Quickly drop by spoonfuls onto waxed paper. Once it's all dropped onto the paper, quickly shape into smoother balls with clean hands. Press a pecan half into the top of each one, if desired. Press them down pretty good or they'll fall off later.
Store in airtight container. Enjoy!
***Do not make divinity on a rainy day.***
This is a great recipe for a stand mixer. Most hand mixers just can't hold up to divinity.
PLEASE READ NOTES HIGHLIGHTED IN RED AT THE BOTTOM OF THIS POST BEFORE ATTEMPTING TO MAKE THIS