Cauliflower
The cauliflower originated from Asia Minor and is raw really yummy.
You can chop it for example into small pieces and create some sort of "rice" with it (for raw sushi for example). Then it should be eaten quickly, because it doesn't even last for 24 hours in the fridge.
Season
The harvest in the open land takes place from spring to late fall. Here they are also available in winter.
Wikipedia
Cauliflower on Wikipedia
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