Take a small, clean glass jar and fill it just under half way with double or whipping cream. Shake!
Depending on how fast you can shake the jar, the cream whips to a firm texture in no time. My dinner guests were pretty over excited when a race emerged between two competitive shakers – just make sure the lid is firmly on each jar to avoid catastrophe.
I’m now wondering what else I can take my jar method to; whisking eggs? frothing milk for cappuccino? mayonnaise? … watch this space.