science

Teotlaqualli

Teotlaqualli is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Teotlaqualli rather than just read about it. In short: Teotlaqualli, meaning "divine food" and also known as teopatli ("divine medicine") among other names, is a hallucinogen that was used by the Aztecs in the pre-Columbian era. It was made from a combination of ololiuhqui (Ipomoea corymbosa; a morning glory), picietl (Nicotiana rustica; Aztec tobacco), and the ashes of poisonous animals such as spiders, scorpions, and snakes.

Key takeaways

Teotlaqualli belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Teotlaqualli to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Teotlaqualli from memory before moving on to harder problems.

Reference excerpt

Teotlaqualli, meaning "divine food" and also known as teopatli ("divine medicine") among other names, is a hallucinogen that was used by the Aztecs in the pre-Columbian era. It was made from a combination of ololiuhqui (Ipomoea corymbosa; a morning glory), picietl (Nicotiana rustica; Aztec tobacco), and the ashes of poisonous animals such as spiders, scorpions, and snakes. Ipomoea corymbosa contains serotonergic psychedelics like ergine and isoergine, while Nicotiana rustica contains very high concentrations of nicotine as well as harmala alkaloids. Both Ipomoea corymbosa and Nicotiana rustica are known to be or have been hallucinogenic. The full contents of the drug are unknown. Teotlaqualli was a black unguent or paste that was applied to the skin and was absorbed transdermally. It was used by Aztec priests and healers, as well as on some occasions by Aztec emperors and even soldiers. It was believed that the drug eliminated fear and produced a proper mental state for serving the gods. The drug was also used as a medicine to treat various ailments. It is thought that teotlaqualli may explain the dark coloration of some Aztec gods as shown in the codices. The Aztecs also offered teotlaqualli to the gods as food. European colonialists believed teotlaqualli to be a form of witchcraft that caused its users to turn into witches or demons and to see and speak to the devil. Teotlaqualli was described by Fray Diego Durán in his book Historia de las Indias de Nueva España e Islas de Tierra Firme (completed in 1581 but not published for centuries later) as well as by other European colonialists such as Hernándo Ruiz de Alarcón (published in 1629). Jan G. R. Elferink extensively reviewed teotlaqualli in his 1999 paper Teotlaqualli: The Psychoactive Food of the Gods.

See also Aztec use of entheogens List of substances used in rituals Ayahuasca

References

Worked examples

Example 1 — a first encounter with Teotlaqualli

Start with the simplest possible case. Write down what Teotlaqualli claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Teotlaqualli before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Teotlaqualli ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Teotlaqualli

In research: Teotlaqualli appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Teotlaqualli in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Teotlaqualli is common in secondary-school and first-year university syllabi. It links to neighbouring topics Drugs not assigned an ATC code, Entheogens, Herbal and fungal hallucinogens, so understanding it makes those chapters shorter.
In everyday life: Look for Teotlaqualli outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Teotlaqualli in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Teotlaqualli means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Teotlaqualli out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Teotlaqualli in simple terms?

Why does Teotlaqualli matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Teotlaqualli?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Teotlaqualli.