Camotes, commonly called sweet potatoes, and by the Spaniards batatas, are produced in great abundance, of both the yellow and purple kinds. I have seen them weighing ten pounds each; when roasted or boiled their taste is sweeter than that of the chesnut, and all classes of people eat them. They become much more farinaceous if exposed for some time to the sun after they are taken out of the ground; and if kept dry they will remain good for six months. They are propagated by setting pieces of the branches of old plants, to procure which the camote itself is sometimes planted.
Although the arracacha which is grown in this valley is neither so large nor so well tasted as that which is produced in a cooler climate, it is nevertheless an exceedingly good esculent. It is cultivated in a rich, loose soil, and has generally five or six roots, something like parsnips, but of a different flavour; they are not very mealy, and require but little cooking; they are, however, very easy of digestion, on which account they are given to the sick and convalescent; the leaves bear a great resemblance to those of celery. The plantation is either from cuttings of the root, like potatoes, or from the seed; in the first case the roots are full grown in three months, but in the latter in not less than five. If allowed to remain in the ground double the time mentioned the roots continue to increase in size, without any detriment to their taste. Starch is sometimes made from the roots, and used in the same manner as the arrow root is in other countries. Only the white arracacha is here cultivated. The arracacha deserves the attention of Europeans; it would, I am pretty certain, prosper in England, because its natural temperature, where it thrives best, is in about 60° of Fahrenheit.
The tomate, love apple, is very much cultivated, and is in frequent use both in the kitchen and for confectionary, and produces a very agreeable acid.
Capsicum, cayenne pepper, aji, is abundant; I have counted nine different sorts, the largest, rocotos, about the size of a turkey's egg, and the smallest, which is the most pungent, not thicker than the quill of a pigeon's feather; the quantity of this spice used in America is enormous; I have frequently seen a person, particularly among the indians, eat as a relish, twenty or thirty pods, with a little salt and a piece of bread. One kind called pimiento dulce is made into a very delicate salad, by roasting the pods over hot embers, taking away the outer skin, and the seeds from the inside, and seasoning with salt, oil, and vinegar.
It is rather a surprising fact, that manure is never used on the farms or plantations. The astonishing fertility of the soil, which has been under cultivation for upwards of three hundred years, and produced luxuriant annual crops, appears to be supported by the turbid water from the mountains, during the rainy season, with which it is irrigated. This water, like that of the Nile, leaves on the ground a slimy film, which is said to contain a considerable quantity of animal matter.