What exactly is the CSIRO diet?

I'm looking for something that is more of a lifestyle change to eating healthy food, rather than dieting with a reduction in food, or with those meal subsitution things (which i can't use anyway).

My problem is normal the food you have to eat on this plan take ages to prepare, and i struggle to make dinner on a normal day..

Oh, and we only eat kosher food, so i find it hard to adapt some diets to this...

But that being said, i probably don't try hard enough.

I would love to lose some weight, around 15kg would be perfect, but i'ld be happy with anything... i only lost 7kg after having DA, but as i put on 15kgs, i'm still heavier than i was when starting out... And if i don't begin to lose some, when i get preg again i'm just going to get bigger... I don't want to end up huge after having heaps of kids!