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Romanesco broccoli (also known as Roman cauliflower, Broccolo Romanesco, Romanesque cauliflower, Romanesco or broccoflower) is an edible flower bud of the species ''
Romanesco superficially resembles a cauliflower, but it is chartreuse in color, with the form of a natural
Fractal Food: Self-Similarity on the Supermarket Shelf
(John Walker, March 2005)
(Aleksandar Rodić, 2009) {{DEFAULTSORT:Romanesco Broccoli Brassica oleracea Fractals Inflorescence vegetables de:Blumenkohl#Formen und Typen
Brassica oleracea
''Brassica oleracea'' is a plant species from family Brassicaceae that includes many common cultivars used as vegetables, such as cabbage, broccoli, cauliflower, kale, Brussels sprouts, collard greens, Savoy cabbage, kohlrabi, and gai lan.
Its ...
''. It is chartreuse
Chartreuse () may refer to:
Food and drink
* Chartreuse (liqueur), a French liqueur
* Chartreuse (dish), a French dish of vegetables or meat tightly wrapped in vegetable leaves and cooked in a mould
Religion
* Carthusians, a Catholic religi ...
in color, and has a form naturally approximating a fractal
In mathematics, a fractal is a geometric shape containing detailed structure at arbitrarily small scales, usually having a fractal dimension strictly exceeding the topological dimension. Many fractals appear similar at various scales, as illu ...
. When compared to a traditional cauliflower
Cauliflower is one of several vegetables in the species ''Brassica oleracea'' in the genus ''Brassica'', which is in the Brassicaceae (or mustard) family. It is an annual plant that reproduces by seed. Typically, only the head is eaten – the ...
, it has a firmer texture and delicate, nutty flavor.
Description
Romanesco superficially resembles a cauliflower, but it is chartreuse in color, with the form of a natural fractal
In mathematics, a fractal is a geometric shape containing detailed structure at arbitrarily small scales, usually having a fractal dimension strictly exceeding the topological dimension. Many fractals appear similar at various scales, as illu ...
. Nutritionally, romanesco is rich in vitamin C
Vitamin C (also known as ascorbic acid and ascorbate) is a water-soluble vitamin found in citrus and other fruits and vegetables, also sold as a dietary supplement and as a topical 'serum' ingredient to treat melasma (dark pigment spots) an ...
, vitamin K
Vitamin K refers to structurally similar, fat-soluble vitamers found in foods and marketed as dietary supplements. The human body requires vitamin K for post-synthesis modification of certain proteins that are required for blood coagulation ...
, dietary fiber
Dietary fiber (in British English fibre) or roughage is the portion of plant-derived food that cannot be completely broken down by human digestive enzymes. Dietary fibers are diverse in chemical composition, and can be grouped generally by the ...
, and carotenoids.
Fractal structure
Theinflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...
(the bud) is self-similar
__NOTOC__
In mathematics, a self-similar object is exactly or approximately similar to a part of itself (i.e., the whole has the same shape as one or more of the parts). Many objects in the real world, such as coastlines, are statistically se ...
in character, with the branched meristems making up a logarithmic spiral, giving a form approximating a natural fractal; each bud is composed of a series of smaller buds, all arranged in yet another logarithmic spiral. This self-similar pattern continues at smaller levels. The pattern is only an approximate fractal since the pattern eventually terminates when the feature size becomes sufficiently small. The number of spirals on the head of Romanesco broccoli is a Fibonacci number.
The causes of its differences in appearance from the normal cauliflower
Cauliflower is one of several vegetables in the species ''Brassica oleracea'' in the genus ''Brassica'', which is in the Brassicaceae (or mustard) family. It is an annual plant that reproduces by seed. Typically, only the head is eaten – the ...
and broccoli have been modeled as an extension of the preinfloresence stage of bud growth. A 2021 paper has ascribed this phenomenon to perturbations of floral gene network
A gene (or genetic) regulatory network (GRN) is a collection of molecular regulators that interact with each other and with other substances in the cell to govern the gene expression levels of mRNA and proteins which, in turn, determine the fu ...
s that causes the development of meristems into flowers to fail, but instead to repeat itself in a self-similar way.
See also
* PhyllotaxisReferences
External links
* * *Fractal Food: Self-Similarity on the Supermarket Shelf
(John Walker, March 2005)
(Aleksandar Rodić, 2009) {{DEFAULTSORT:Romanesco Broccoli Brassica oleracea Fractals Inflorescence vegetables de:Blumenkohl#Formen und Typen