Your cake icing has whipping cream in it should you put the cake in the fridge?
Whipping cream and dairy products should be stored in the fridge....to maintain shape as well as to prevent bacteria from growing.
Yes. wiki.answers.com/Q/Why_is_whipped_cream_a_colloid
How do you make heavy whipping cream?
What you do is you get a tin of double cream from the shops (the really rich kind of cream) and when you get home, you pour all of it in a bowl and maybe if you would like it to be sweeter, you must add some sugar (if you can, you could even add vanilla cream) and whisk it for a while until you notice that it's becoming thick and you continue whisking it until it's nice and thick.
I don't know if this fits exclusivly but Chemophobia , which isn't necessarily a fear of but a prejudice against artificial substances in favour of 'natural' substances.
I could see that applying to Whipped cream. But cold cream?