Candles burn longer
Candles burn longer if you freeze them first. The longer the better. By freezing, the "aging process" is accelerated. Tealights reach almost twice the burning time. Bar candles up to three times the usual time. The colder the frost compartment and the longer (> 1 month) the better. A bit stupid you will be angeguggt, however, if the visit sees the so filled frost compartment in the fridge. Oh, in winter when it's really cold outside, you can store them in a bag on the balcony ;-)
