Simple Icecream

Can anyone help me with this recipe please.

I saw Nigela on telly and she just added Crteam and icing sugar then your own flavourings??????????????????????????????????????

Is this correct or am i leaving out something????????????????????/

i make my own ice cream

in the recipe i was given:
600ml cream
2tspn vanilla essence
1 tin condensed milk
2 crushed chocolate bars (crunchie is the best!)

mix all together then freeze...