Disclaimer, I am not a medical professional, this is a recipe that has worked for us, check with your medical professional first.

Due to a Laryngeal Cleft, my daughter aspirated. At first, we used Simply Thick(ST) Honey Thick and it was a great way to safely gage how thick HONEY THICK really was. ST's main ingredient is Xantham Gum. In an effort to avoid ingesting so much preservatives, I search for a homemade receipe. 

It has work great for us, the only draw back being that it need to stay in the fridge.

All you have to do is add 8 oz of water per 1 TBS of Xantham gum in the food processor.

Give it a good spin, store in the fridge in an air tight container and use it as needed. Toss after 5-6 days if unused and make a new batch.