All of these responses have been very interesting. I've tried hot tea, hot water with honey and lemon, gargling with warm salt water, and gargling with warm vinegar water. That last one was very difficult for me, which surprised me because I used to drink it cold as a teen. Anyway - all of these remedies gave me temporary relief.
Last night, my elderly neighbor gave me a new one to try, and IT WORKED!!! She told me to drink hot Tang, and gave me a few tablespoons of mix. I was skeptical, but the soreness seemed to get worse in the evening, and I didn't have anything to lose. I drank a mugful and my throat, which had been feeling like it ran into a cheese grater, immediately felt better, and it still feels better this morning!
I'm off to the store to buy my own supply! I'll have to mix up some of that Maggie's stuff next.
Thanks to everyone for your responses!