Line two cookie sheets with parchment paper, set aside. Prepare two spoons with butter or spay with nonstick cooking spray, set aside.
In a saucepan over medium-high heat, mix together the sugar, corn syrup, and water. Stir until the sugar has dissolved then add the candy thermometer and stop stirring.
Watch for the candy thermometer to reach exactly 255 degrees, then immediately remove it from heat. (This takes about 10-15 minutes)
While the sugar mix is heating up, use a stand mixer with whisk attachment to beat the egg whites on high speed. This can also be done with a hand mixer and large glass bowl. Beat until the egg whites are super white, fluffy, and form stiff peaks.
When the sugar mix reaches 255 degrees, start to SLOWLY pour into the egg whites while the mixer is running at a medium speed. You want to do a super slow drizzle, it took me about 5 minutes to pour it all in.
Once it is all poured in, add vanilla and continue to beat at a high speed for a good 8 to 10 more minutes until it looses its shine.
Using the two spoons, make dollops of the divinity onto parchment paper. Move quickly because the divinity will start to stiffen.
Optional: while they are warm, sprinkle some chopped pecans on top.