The source I have (book) is one cup of each is 8 gm for turnip and 6 for cauliflower. At least the turnip has some flavor and more filling.
I’m not a fan turnips, but I was curious. Did the Atkins thing years ago.
I posted a recipe a week or so back you might want to check out.
http://www.freerepublic.com/focus/chat/2657401/posts?page=66#31
It calls for flour, but I left the flour out the last time and it was ok. The only reason I thought it too moist is because I know what its like with the flour added. This is something I would have eaten on the Atkins diet. You can certainly change it up to suit your veggie and meat preferences.