The idea of making ice-cream with liquified gases dates back to the very start of the 20th Century. It was described by <a href=http://matthew-rowley.blogspot.c

The idea of making ice-cream with liquified gases dates back to the very start of the 20th Century. It was described by <a href=http://matthew-rowley.blogspot.co.uk/2010/09/mrs-marshalls-liquid-air-ice-cream.html>Agnes http://matthew-rowley.blogspot.co.uk/2010/09/mrs-marshalls-l... Marshall</a>.