So I am super late to this party but wanted to put some things in here since so many people have various remedies they like. I thought I might tell you about some of the things my family uses. The nice thing is they are all super easy to make and used extensively in Chinese medicine (yeah, my fam is Chinese and I've lived there).
For colds where you have a dry nose, clear snot, watery eyes
One part White Chrysanthemum flowers
One part Honeysuckle flowers
White Sugar to taste
For colds with fever, sore throat, green snot, nausea
8 slices fresh ginger with the skin taken off (hint: use a spoon not a knife)
Two generous Tbsp. Brown Sugar
Boil the ginger for 1/2 hour and then add the sugar. This may seem strong at first, but it is warming and helps to get rid of bad invasive hot wind.
If you have pneumonia or bronchitis then try a licorice tea as this moistens the lungs. You can get a bunch of it and just start boiling the c**p out of it till you get a concentrate and use it cold.
If you have asthma you can take a Diakon radish and cut it up into slices. cover with maltose syrup (don't ask me why they say maltose) Let sit over night and then pour off the liquid that collects at the top. This is the medicine. Take a spoon full as need.
Hope these all help anyone that tries 'em.