LOL well I used the recipe in the book... cream, milk, vanilla, egg yolk, sugar.
Heat vanilla, cream and milk, then add beaten egg yolk and sugar and cook slowly til it thickens, then chuck it in the ice cream maker...
I think I've figured it out... I have a feeling it has to do with how long it left it in the freezer after it had been stirred. I was QUITE hard after it came out, so perhaps that it

Does that sound like your recipe Sarah? if it does its probably my bad about the grittiness LOL