To purge... Before you take a draw/puff, blow gently through your cigar (kind of like when you were a kid and you'd blow through your straw into your drink and then get slapped by your pop)
for a few seconds at most. Then take a draw/puff and you will taste the difference instantly.
Basically what your doing is burning off the tars and build up, instead of drawing them into your stogie your burning them out. You can also do this with your lighter. I use my lighter to purge when a regular purge doesn't work or my cigar has went out. Hope that helps.
