It should be noted, however, that we don't drink things with our esophagus. When that happens, we call it choking.

Things you drink do not actually coat the part of your body that makes the noise.
Best way to protect your voice is to be properly hydrated (you can use a remedy if you want, but water works great too) and to warm up your chords. Starting drinking water about an hour before you sing so your body has time to work that water into your system. Warm ups don't need to be hard, just start easy. Start by humming bass lines or melodies softly and work you way up to signing over the course of 10 minutes or so. You can work scales and other 'traditional' vocal warm ups but there is more than one way to skin a cat.
If your voice hurts, stop signing. You are doing damage.
If you are straining a lot, stop singing. You are doing damage.
Clearing your throat over and over is also bad and damages the chords.
Your voice needs to be protected if you plan to use it a lot.
I'm the worship leader at my church and sing several hours in rehearsal each week both with the band and then choir rehearsals, plus Sunday services and, in 8 years, have never missed a Sunday because of my voice. There was a time that I used to eat cough drops to help get me through rehearsals but the next day my voice would be shot. Now, staying hydrated, my voice is totally fine and I have no strain or soreness the next day at all.
The hot water or tea is great because you breathe in the warm, moist air which is wonderful for the chords and drinking nearly anything is good for your body being properly hydrated. Downing water while singing is also good and does wet the back of your throat ect, but it's no substitute for being well hydrated from the start. I am never more than a few feet from my waterbottle
Also, signing more often will make your voice stronger (assuming you are taking care of it). Chords are muscles and if you work them out they will be stronger.
A quick fix will get you through an evening but doing that fix over and over will make your voice weaker. We all want everything now, it's the modern way, but if you beat up your chords they will give out.
Sorry to sort of hijack the thread... It pains me to see and hear people hurting themselves. Just being properly hydrated will make a huge difference and often times that's what the real benefit of these remedies is. People in general are so dehydrated all the time and your chords just won't work right if you are. Drink up!
Robert