How Long Should a Candle Burn at Once?
Between two and four hours suits most jars, and here is why.
Start with the wick
Most trouble with a candle begins at the wick. Trimmed short, it burns clean and steady; left long, it smokes and leaves soot on the glass.
Give it time
Wax has a memory. Let every burn run until the pool reaches the edge, and the candle will burn level to the end.
