How to burn a candle properly

Let a new candle burn long enough for the melted pool to reach the edges of the jar, usually two to three hours. Shorter burns leave a tunnel.

Trim the wick before each use and keep the candle away from draughts. Never burn it for more than four hours at a time.

Stop when about a centimetre of wax remains. Stop when about a centimetre of wax remains in the bottom of the jar.