Beers are broadly divided into two categories: top-fermented ales and bottom-fermented lagers. Stouts are a type of ale that uses slow-fermenting yeast that evolved out of the porter style. Stouts tend to be thicker, darker, opaque beers with higher specific gravity - similar to milk. They are usually less bitter than other ales, and typically exhibit tones like chocolate, coffee, oatmeal, and milk.
Foods that are sharp can scratch the tissue, leading to discomfort. Spicy foods or foods that are extremely hot or cold can also cause the roof of the mouth to become damaged, leading to swelling or pain. Tobacco use can also damage the tissue, leading to discomfort on the palate.
Some drugs can reduce the amount of saliva in your mouth, causing an uncomfortably dry mouth (xerostomia). Without enough saliva, the tissues in the mouth can become irritated and inflamed. This increases your risk for infection, tooth decay, and gum disease. More than 400 medications are known to cause dry mouth. Dry mouth is also a side effect of certain chemotherapy medicines.