Short answers, pulled from the story.
Cauliflower is a vegetable in the species Brassica oleracea, in the mustard or cabbage family. The edible portion is its dense head of undeveloped flower buds, known as the curd, which is usually white but can also be green, orange, or purple.
Cauliflower was domesticated in the Mediterranean region during antiquity, most likely by selective breeding of wild cabbage. In the Middle Ages it was associated with the island of Cyprus, reached Italy around 1490, and was introduced to India by the British in 1822.
Orange cauliflower gets its color from beta-carotene and originated from a natural mutant found in a cauliflower field in Canada. Purple cauliflower owes its color to anthocyanins, the same pigments in red cabbage and red wine, while green cauliflower, sometimes called broccoflower, has been commercially available since the early 1990s.
In 2023, world production of cauliflower, reported combined with broccoli, was 26.5 million tonnes. China and India led with 72% of the total, followed by the United States, Spain, and Mexico.
Raw cauliflower is 92% water with about 25 calories per 100 grams and negligible fat. It has a high vitamin C content at 54% of the Daily Value, plus moderate levels of several B vitamins, vitamin K, and potassium.
Cauliflower has a fractal dimension calculated to be roughly 2.8, and every branch or module resembles the entire cauliflower. The Romanesco variety shows this most clearly, with spiral curds that grow in fractal patterns, and the angle between distant modules equals 360 degrees divided by the golden ratio.