As an herbalist I will define the word demulcent. It is used to describe any substance that soothes inflamed mucosa. Many herbs /foods have a demulcent effects as fenugreek, flax and ghee (clarified butter
Some of these demulcent foods have been studied These include Green Bananas/plantains, bone broth, cabbage juice and ginger Ginger is a widely used culinary herb but has many excellent health benefits due to the active ingredient—gingerol.
Other demulcent herbs include black pepper, peppermint and tumeric .
As a beekeeper, i need to put honey as a excellent demulcent. Its medicinal effect on wound healing is excellent. It is great for infections and digestive issues It is not any honey The honey studied was honey from the manuka flowers ( Leptospermum scoparium ) - as it had the highest level of antibiotic activity. This was studied in New Zealand ( the origin of Manuka honey ) You can understand why this is a very expensive honey to buy- It also has a strong inhibitory effect of Helicobacter pylori ( H. pylori ) I use propolis and mastic gum for H. pylori infections
Studies were done with ulcerative colitis patients . This manuka honey had 100 % compared to other sugars studied
I must mention other demulcents as Umeboshi plums ( from China ) , wheatgrass juice and the use of traditional Indian spices.