1) Honey and Ginger
A great home remedy for mucus is to try combining a spoonful of honey with some freshly grated ginger.  Try eating one spoonful daily, and this will really help to naturally clear up excess mucus.

2) Spicy Foods
Try eating spicy foods like chili peppers, wasabi, and cayenne pepper.  Adding these foods to some of your favorite recipes helps the body to release the mucus build up that is so uncomfortable.

Honey

3) Drink Fluids
While this may sound counterintuitive, you need to be sure that you're drinking plenty of fluids.  Drinking lots of water will actually help the mucus to pass through your body more easily and will help to clear your throat.  Give your increased intake of fluids a healthy boost by adding vitamins C, E and Zinc.
 
4) Steam Inhalation
Boil some water and inhale the steam.  Put a towel over your head and bowl to trap the steam. Be sure not to get too close to the boiling water, but close enough to achieve the benefits of the steam!
 
5) Blow Your Nose
Lots of mucus is just uncomfortable, but it can become even worse when it is draining down the back of your throat.  Prevent this by blowing your nose frequently.
 
6) Saltwater Gargle
Gargle with warm water with some salt added to it.  Be sure not to swallow it!
 
7) Eucalyptus Oil
If you have a vaporizer, add a few drops of eucalyptus oil to the water.  This will create a wonderful smell and will also really help to relieve congestion and loosen any built up phlegm.
 
8) Limit Fried Foods, Meat, and Dairy Products
Fried foods, meat, and dairy products all increase phlegm production in the body.  If you have a problem with too much phlegm accumulating in the body, try to avoid these foods and you'll see results.  These foods should largely be avoided anyway, but it's nice to know that this is another great reason to do so!