Whoever has suffered from a earache, knows how hellishly painful it can be. I can personally remember when I was younger and had a middle ear infection, and there was seemingly nothing that could help. Not even clenching my teeth helped, the pain was simply to much.
It is important that the salt is coarse sea salt. It should be the rough grains so that they don't trickle out of the sock. And it needs to be sea salt because of the particular chemical composition. 1 - 1.5 cups should be enough.
The salt goes - as expected - in the socks. To do this, you should roll the edge of the sock inside out, or use a funnel when filling, so that nothing come out.
The socks should be closed tightly, preferably with a double-knot.
The end packet should be roughly the size of the palm of your hand.
Then place the entire thing in a pan on medium heat. 4-6 minutes in total should be long enough. It's best when the sock is regularly turned, so that it doesn't get hot. Alternatively, you could heat the socks in the microwave. This is however, problematic because the salt doesn't get evenly warmed and it's difficult to judge how long the socks should remain in the microwave. Secondly, the sock fabric is damaged and has the possibility to tear. Therefore, you should place the sock in the microwave for 5 second intervals, which is seemingly time-consuming. The method in the pan is much better.
Now you need to carefully test with your hand, how warm the sock is, so that the patient doesn't burn their ear. Or wait a bit before use. The sock should be placed on the ear and should also cover a part of the jaw bone. The pain alleviation should work within minutes. Great.