A few days back I came across a recipe for ice cream that sounded too preposterous to be real but I tried it anyway and lo and behold, ice cream (well, ice milk) in 7 minutes! Maybe you'll give it a go:
you'll need ice cubes, 6 tbsp coarse salt and 2 zipper bags, one small and one large (I know, it's already weird)
then mix up 125ml skimmed milk, vanilla essence to taste and sweetener to taste. Put the flavoured milk into the small zipper bag and seal. Fill the big zipper bag half way with ice cubes and add salt. Place small bag inside large bag and zip up large bag. Then shake like the dickens for 6-10 minutes and presto, you've got ice milk! You can't imagine my surprise when I stopped shaking and found a solid ball had formed inside the small bag!
It's a bit grainy though, I read somewhere that a pinch of xanthan gum will make it smoother. Also, I put the whole shebang into a large tupperware-ish bowl for the shaking bit, it was too hard with just the bags. I also found that I could have added a whole tsp of vanilla.
AND, you've burned off the calories you consume in the ice milk just by making it
Well as I'm typing this I get the feeling I've already posted this, so if I did - sorry for the rerun!