Chilling foodstuffs using heated ammonia is magic, pure and simple, much
like producing voices or music by manipulating 0s & 1s.  F.M., we old time
tip & ringers used to call it it was and is the stuff of layoffs.

  I kneel to the Dometic gods as I perform the lighting ritual whilst
reciting the litany, or should I say, mutter dire imprecations and threats.

Geo/atl