3. In a medium flat-bottomed glass dish, place the onion, carrot, radish, pepper, and cabbage in as much of a single layer as you can. It doesn't have to be perfect, but make it even. In a glass, whisk tougher the rice vinegar, sugar, salt, and lime juice. Pour over the sliced and shredded vegetables and allow to sit on the counter while you finish preparing the rest of the ingredients.