My mother used to make the following concoction to sooth colds: black tea with honey, cinnamon and ginger.
Here Is my healthier version of it.
It is great for soothing colds
Boosting the immune system
1 tablespoon organic apple cider vinegar
1 teaspoon honey
1 teaspoon cinnamon
Chopped fresh ginger
Put everything in a cup, fill with hot water, stir well and sip slowly.