Lemon-ginger tea 

Another recipe from WebMD that has helped my sore throat.  You just need 4 lemons, a handful of fresh ginger, hot water, and some honey.  I recommend using at least 10 cups water to make sure the drink is not too acidic. Recipe here:  http://www.m.webmd.com/cold-and-flu/cold-guide/chicken_soup_and_recipes_for_cold (Apr. 2015)