Place the chopped onion into the soup pot and add water. If just making onion broth, place the soup pot on the stove burner and bring the mixture to a boil. Cover, turn the heat down to low, and simmer for 30 minutes.
If adding garlic, ginger, or both, add those ingredients to the soup pot along with onions and water. Place soup pot on the stove burner and bring mixture to a boil. Cover, turn the heat down to low, and simmer for 30 minutes.
After 30 minutes, turn the burner off, remove the soup pot from the stove, and place it on a heat-proof surface.
Place a mesh strainer or colander over a bowl and pour the mixture through the strainer, separating the solids from the liquid.
Do not discard the solids. Transfer the solids to a freezer-proof container so you can add them to your next batch of bone broth.
To drink, pour approximately 8 ounces of this ancient broth remedy into a mug. If you want, you can add a pinch of sea salt. You may also add 1 teaspoon of ghee or other fat to the broth. Stir to dissolve fat and drink broth warm.
If you prefer, you can blend the broth with the sea salt and ghee to create a frothy beverage in which the ghee or other fat is completely emulsified with the broth.
This broth (without the added fat) will stay fresh stored in the refrigerator for 3-4 days. If frozen (without the added fat), this broth will stay fresh for 2-3 months.
To rewarm broth, add a specified amount to a saucepan. Bring to a boil, remove from heat, add to a mug, (along with sea salt and ghee, if desired), and enjoy. Hope you feel better soon!