South Kensington.
The inclusion of the husk or shell in some of the cheaper forms of chocolate is another reprehensible practice (strongly condemned), as they do not possess the qualities for which the kernel or nib is so highly prized. To prevent this practice it was enacted in 1770 that the shells or husks should be seized or destroyed, and the officer seizing them rewarded up to 20s. per hundredweight. From these a light, but not unpalatable, table decoction is still prepared in Ireland and elsewhere, under the designation of "miserables."
Among other beverages which have from time to time been produced from the cacao was a fermented drink much in vogue at the Mexican Court, to which it appears from the accounts of the conquest that Montezuma was addicted, as "after the hot dishes (300 in number) had been removed, every now and then was handed to him a golden pitcher filled with a kind of liquor made from cacao, which is very exciting." One variety, called zaca, drunk by the Itzas, consisted of cocoa mixed with a fermented liquor prepared from maize; but a more harmless invention was a drink composed of cocoa-butter and maize.
[Illustration--Black and White Photgraph: How the Cacao Grows. (Showing Leaf, Flower, and Fruit.)]
There remain three forms in which pure cocoa may be prepared as a beverage:
1. _Cocoa-nibs._--The natural broken segments of the roasted cocoa-bean, after the shell has been removed, prepared for table as an infusion by prolonged simmering.
It is strange that this ridiculous and wasteful means is still in use at all, as next to none of the valuable portions of the nib are extracted. The quantity of matter removed by the hot water is so small, that close upon 90 per cent, of the nourishing and feeding constituents are left behind in the undissolved sediment, the substances extracted being principally salts and colouring matters. One can but suppose that the long habit of drinking an infusion from coffee-beans and tea-leaves has fixed in the mind the erroneous idea that the substance of the cocoa-bean is also valueless. The fact remains, however, that it is still customary at some hydropathic establishments, and perhaps in a few other instances, for doctors to order "nibs" for their patient, which may sometimes be accounted for by injury having resulted from drinking one of the many "faked" cocoas offered for sale; the order for "nibs" being a despairing effort to obtain the genuine article.
2. _Consolidated Nibs_--_i.e._, cocoa-nibs ground between heated stones, whence it flows in a paste of the consistency of cream, which, when cool, hardens into a cake containing all the cocoa-butter. Cocoa in this form (mixed with sugar before cooling) is served in the British Navy--a somewhat wasteful and inconvenient practice, as when stirred, the excess of fat at once floats to the top of the cup, and is generally removed with a spoon, to make the drink more appetising.
3. _Cocoa Essence._--This is the same article as No. 2, with about 60 per cent, of the natural butter removed; consequently the proportion of albuminous and stimulating elements is greatly increased. It is prepared instantly by pouring boiling water upon it, thus forming a light beverage with all the strength and flesh-forming constituents of the decorticated bean.[9]
Chemical analysis of cacao-nibs and cocoa essence shows them to contain on an average:
Cacao-nibs. Cocoa Essence.
Cocoa-butter 50 parts. 30 parts. Albuminoid substances 16 " 22 " Carbohydrates (sugar, starch, and digestible cellulose) 21 " 30 " Theobromine 1.5 " 2 " Salts 3.5 " 5 " Other constituents 8 " 11 " ------ ------ 100 100
The _cocoa-butter_ when clarified is of a pale yellow colour, and as it melts at about 90° F. it is of great value for pharmaceutical purposes, especially as it only becomes rancid when subjected to excessive heat and light, as to the direct rays of the sun.
[Illustration--Drawing: ANALYTICAL APPARATUS.]
The albuminoid or nitrogenous constituents will be seen to form about a sixth of the whole nib, or more than a fifth of the cocoa essence, and to their presence is due the fact that absolutely pure cocoa is such a remarkable flesh-former.
[Illustration--Black and White Plate: Cacao Crop, Trinidad.]
The carbohydrates, producing warmth and fat, are also important food substances, the proportion of which, while forming about a fifth of the whole bean, rises to close upon a third of the essence.
Cocoa also contains a volatile oil, from which it derives its peculiar and delicious aroma.
Thus _nearly nine-tenths of the cacao-bean may be assimilated by the digestive organs_, while three-fourths of tea and coffee are thrown away as waste. For the same bulk, therefore, cocoa is said to yield thirteen times the nutriment of tea, and four and a half times that of coffee. Its value as a substitute for mother's milk has already been alluded to, but may well
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