Ingredients :

• Purple cauliflower — The visual star. Its color comes from anthocyanins, the same pigments as in blueberries — and like them, it loses some brightness with heat. Roasted in the oven, it takes on a deep burgundy hue that is even more beautiful than raw. Choose it very compact, with leaves still green. Organic grocery stores have them regularly, otherwise markets in the fall.
• White cauliflower — This one is here for the cream. Half is enough — keep the other half for something else. Once cooked and blended with parmesan, it gives a sticky texture under the spatula and is smooth in the mouth. Any classic white cauliflower from the supermarket does the job.
• Raw beet — Not the vacuum-packed cooked beet that bleeds liquid — the raw, firm kind often found in bulk. As oven chips, it becomes translucent and crunchy, with a slightly concentrated earthy flavor. A mandoline is really useful here to get regular 1-2mm slices. With a knife, it’s doable, but you’ll need to be patient and steady.
• Grapes — The surprise ingredient. Cut into quarters, they bring a freshness and sweetness that cuts through the richness of the parmesan cream. Muscat or classic white grapes — avoid industrial seedless grapes that are too tasteless, take something that actually smells like something.