Unit IV: Botanical Extractions

This is the heart of the apothecary's art. Everything you have built, the zoned bench, the trained senses, the ground and filtered materials, was preparation for this: drawing the character of botanicals into a carrying medium, by six great systems, each with its own logic, its own rules, and its own honest limits.

You will steep in oil and in water, in glycerin and in vinegar, in spirit and in steam. You will learn why oil infusions demand dried botanicals, why vinegar must never meet reactive metal, why alcohol both extracts and preserves, and how the alembic's cycle of evaporation and condensation has been worked since Alexandria. And you will record every extraction in the ledger that becomes the backbone of your archive.

Unit Learning Objectives

By the end of this unit, you will be able to:

• Prepare oil infusions by warm, solar, and cold methods, and state the dried-botanicals rule and the reason behind it.
• Compare hot and cold water infusions of the same botanical and explain how temperature changes extraction.
• Prepare glycerites and honey-based preparations, and explain how viscosity and sugar concentration preserve them.
• Define a decoction and simmer dense botanicals safely while managing tannin release and reduction.
• Prepare, strain, bottle, and label a herbal acetum, and apply the metal rule without exception.
• Fuse resins with indirect heat in a double boiler while keeping a complete temperature log.
• Set a tincture ratio, read spirit strength, and carry a fourteen-day maceration through pressing, straining, and archiving.
• Build and operate a safe stovetop still model, collect a herbal distillate, and distinguish a hydrosol from an infusion.
• Keep an extraction ledger comparing all six solvent systems, with stability tracking and revision notes.

In This Unit

The Unit IV Quiz closes this unit. You will find it, with its download, at the end of Lesson 34: The Extraction Ledger.

What Scholars Will Practice and Make

By the end of this unit you will have prepared extractions in all six solvent systems, kept observation logs across days and weeks, operated a still model, and built an extraction ledger with a solvent comparison record and a readiness rubric for the formulation work ahead. Your shelf will hold the ingredients; your ledger will hold the knowledge.

Extraction gives you ingredients. Formulation gives you preparations. Unit V takes up balms and salves, candles, sachets, emulsions, scrubs, and soap by two methods, and teaches you to design, to fail honestly, and to revise.

PROFESSOR CRIMBLEBREW MUDDLENOOK
Potions Laboratory
Master Apothecary, Head of House Meridies