ice cream portions & else

Hi!
Is there in english a specific name for ice cream portion? (Here's a sample of what I mean - www.pregel.it/imgup/boero.jpg ) Is it OK to use direct polish translation - "ice cream ball"? What else can I use instead of "portion" in this case?
What about things covering ice cream (cherries, chocolate...)? Are they all just "toppings" - no matter liquid or solid ones?