Using a double broiler, mix all ingredients except the vanilla in a large heat safe bowl
Pour the mixed ingredients into the bowl of a standing mixer
Place the bowl over the prepared double broiler
Start to simmer the water and heat the mixture until the candy thermometer reaches 165 ℉ and all the sugar has dissolved, about 5-10 minutes from when the water starts to simmer.
While heating, gently mix to ensure even cooking
Once all the sugar has dissolved and the mix is 165 ℉, remove from heat and place the bowl in a standing mixture and mix on medium high for 5-7 minutes until the egg whites stiffen up and the mixture starts to cool.
Once it starts to stiffen up , add the vanilla.