To be absolutely brutal and honest with you, nobody cares about I look forward to hearing from you.. The practical reason is that it's one of the various standard and conventionally polite ways to end the body of the letter. It's just a standard exit.
1 In some cases, liver failure causes this taste to occur. 2  Gastroesophogal reflux disease can cause the salty taste (even when no pain is present). 3  Some medicines can make everything taste odd. for example the drug enalapril, which is a drug used to prevent heart failure.
When you taste sour on salty it's harder to taste. One ingredient in salt, called cottonseed extract, mainly counteracts most asorbic and falic acids. So, in most salty foods it's harder to taste sour things. + 5 others found this useful. ScOfield Michael.