Light the wick and burn your candle until the wax riches the edge of the jar. This can take up to 2-3 hours. Trim the wick before each burn, and do not burn the candle for less than two hours at a time. Extinguishing the candle too early may lead to tunneling.
The approximate burn time:
4oz amber jar is 22 hours
9oz amber jar is 50 hours