Buy it whole and grate it your self or buy it already grated, or "riced." Cooked cauliflower can change rice in most dishes since it has such a gentle flavor. An awesome substitute is riced cauliflower. They work as a low carb substitute for both pasta and rice dishes. Shredded cabbage is removed from being rice, however it may work as a straightforward-to-make, lower carb side dish.