According to UNESCO the travelling healers are exclusively men. Women play a large part in rituals, care for pregnant women and children, and weave textiles with meaningful motifs. According to Bastien they also gather and dry the herbs and know a great deal about them. In Kaata there are women diviners who take misfortune away from a person and give it to the river.
Each village has long had its own trade, and the villages exchange services and goods. Chajaya and Curva are the villages of the herbal healers, Kaata that of the diviners. Men from Upinhuaya fetched resin from the rainforest and sold it as incense, and people from Calaya traded in coca.
According to Girault the true healers come from six villages around Charazani: Curva, Chajaya, Khanlaya, Huata Huata, Inka and Chari; they never came from Charazani itself or from Amarete. In the 1960s he counted some 230 of them in all. Even then 'new Kallawaya' were going about, from other regions and even from Peru, who mostly read cards. The true healers called them swindlers, who sometimes killed people with poisonous herbs.
Knowledge passes from father to son, from uncle to nephew or from godfather to godchild. An apprentice travels for years with an experienced healer, sometimes up to eight years, and learns the plants, the complaints and the treatment on the road. Bastien counted around a hundred plants, minerals and animal remedies in the daily use of an experienced healer; famous healers of the nineteenth century are said to have known three hundred.
Girault describes how a boy, from the age of eight or ten, travelled with masters from his own village, for a few months or a few years, and then sat a kind of examination before the village council. Whoever later knew enough could become a maestro or watapurichi and received a heart-shaped meteorite stone, koillur rumi, which he wore round his neck as protection. Each village had its own travel territory, and anyone who broke the elders' rules could be severely punished. Around 1910 the healers of Chajaya left for Chile in March, for Peru in June and for Ecuador, Colombia and Panama in July, and were back by New Year; those of Curva sometimes stayed away for two or three years. A healer knew on average 300 to 350 plants; Girault worked with Lucas Ortiz from Chajaya, who could name more than 600. On the road Ortiz would sometimes have the car stop, walk straight to a plant and pick it, while carrying on the conversation.
The Kallawaya have their own professional language, Machaj Juyai, spoken only in healing and in rituals. Linguists find many words from the extinct Puquina language in it, with a grammar from Quechua, and also words from Aymara and other languages. The language is severely endangered. Girault wrote down more than 4,500 of its words and saw that it also has words for farming, livestock and family life, and is therefore more than a secret jargon.
To find out what is wrong with someone, healers cast coca leaves or lay out cards, feel the pulse and look at the urine. Some diviners rub a guinea pig over the body and then read its entrails. In this way quarrels, guilt and broken taboos are also brought up.
How such an offering goes was described by Gerardo Fernández Juárez with Severino Vila in La Paz. A mesa is a meal for the spirits, and each guest gets what he likes. For Gloria, the heaven of the saints and of lightning, Severino makes six or twelve little nests of white cotton on white paper, each turned anticlockwise. Into each nest go carnation petals, a sugar lump, a 'mystery' (a sugar tablet with a picture of a saint, the moon or a cross), llama fat, incense, little lead figures and a scrap of gold or silver leaf. At each nest he calls on a saint, such as Santiago, San Juan or the Virgin of Copacabana, and sprinkles it with sweet wine. Then he holds the mesa over the patient's head, who breathes on it three times, and lets it burn quietly on charcoal. This mesa helps against fright from lightning and nosebleeds that come from it.
The mesa for Pachamama is more lavish. On a bed of coca leaves go carnations, coloured llama wool, q'uwa (a fragrant herb of the high plateau), sugar figures of an 'uncle' and an 'aunt' (the devilish lords of the mines), a toad and a snake, llama fat, incense and copal. On top lies a llama foetus, rubbed with fat and loaded with gold and silver leaf, like a pack animal full of riches. Severino offers it to all the mountains, from Akamani to Illimani, and the mesa burns with alcohol and beer in tall flames. When the egg in it bursts with a bang, the offering has been well received. The mesa for the chullpa, the ancestors in the old graves, is plain: coca, sheep's wool, kantuta, quinoa, an egg for Ankari and a sheep or pig foetus, with raw fat instead of llama fat. At a grave in Chajaya Severino buried this mesa among the bones.
Against bad luck from witchcraft Severino has a bath boiled of retama and twelve kinds of thorny plants, the ch'api mesa. The patient washes with it and the bathwater is taken to a crossroads. Rösing saw something similar after a death. The healer ties left-spun thread around the mourners' necks, wrists and ankles and lays little nests of wool on their chests, which soak up the grief. At the river he breaks the threads, the mourners wash with a brew of thorns and put on clean clothes, and they walk back by another path without looking round.
Girault also had 150 amulets explained to him, mostly carved from white stone, berenguela. Each sign has a fixed meaning. A triangle protects against misfortune and evil beings; a hand with coins in the palm attracts money; a pair of lovers helps in love; a bull or llama brings a good harvest or herd, and ribbed surfaces stand for fields. A hand with one bracelet is for married people, with two bracelets for women. Small stone 'mesas' with a house, livestock and fields are buried by the house with coca, llama fat and wine for prosperity. Figures of black stone serve to do harm, as do the black mesas, which send evil back to whoever caused it or are aimed at an enemy; we do not describe those here.