Field Medicine-Making

This is the chapter that ties the whole book together: the remedy plants of Volume 1 and the wild edibles of Volume 2 become tinctures, oils, salves, and poultices by the methods below. These are traditional preparation techniques with real chemistry behind them — and real risks. Read the safety section first, not last.

Tinctures — alcohol extracts

A tincture extracts a herb's constituents into a solvent — the menstruum — usually an ethanol–water blend. The advantage is precision: a known herb-to-menstruum ratio means a known dose per volume (at 1:5, five milliliters of tincture represents about one gram of herb).

Standard ratios: macerated tinctures are commonly 1:5 — one part dried herb by weight to five parts menstruum by volume; percolated tinctures run 1:1 to 1:2. The folk method: fill a jar one-third to one-half with herb and cover with alcohol.

Match the alcohol to the plant part: hard parts (roots, seeds, bark, resinous leaves) want 100–120 proof (50–60% ethanol); soft parts (leaves, flowers, stems) want 80 proof (40%); fresh herbs need higher proof to offset their own water content.

Maceration steps: 1) Place the herb in a clean GLASS jar. 2) Cover completely with the menstruum. 3) Seal — use plastic-lined lids, since bare metal can leach. 4) Shake or agitate daily. 5) Macerate 2–4 weeks minimum (folk tradition says one moon cycle, about 28 days; some sources accept 10 days to 2 weeks). 6) Press and strain through unbleached coffee filter or cheesecloth. 7) Bottle in amber glass; store cool and dark.

LABEL EVERYTHING: herb name (common AND Latin), date, ratio (e.g. 1:5 at 25% alcohol), and harvest location. WARNING: tinctures are concentrated — dosage caution applies. They are unsuitable for children, pregnancy, and anyone with alcohol sensitivity (glycerin or vinegar alternatives exist but extract some compounds less effectively).

Illustration: Macerating tincture: dried herbs submerged in alcohol menstruum, with dropper bottles, funnel, and cheesecloth.

Infused oils — dried herbs only

Cover DRIED herbs with oil in a clean glass jar — olive, sweet almond, or jojoba, oils that resist rancidity. Infuse slowly for 4–8 weeks with daily shaking (a sunny windowsill for 2–4 weeks is the common shortcut), or speed it with gentle heat: 2–4 hours in a double boiler, or a crockpot water bath on low for 24 hours. Strain through cheesecloth and squeeze well.

WARNING — the key safety rule of infused oils: use DRIED herbs. Fresh herbs introduce water, and water in oil means mold and spoilage. If you must use fresh material, wilt it overnight at minimum — but dried is the standard for a reason.

Salves — oil plus beeswax

The consensus ratio: about 1 OUNCE of beeswax per 1 CUP of infused oil (roughly an eighth of the oil's weight in wax). More wax makes a harder balm; less makes it softer and creamier. Beef tallow is the traditional alternative at about half the oil's weight — very skin-compatible, but it dilutes the infusion more.

Steps: 1) Melt the beeswax into the infused oil in a double boiler, stirring until uniform. 2) CONSISTENCY TEST: drop a bit onto a room-temperature plate — too soft, add wax; too hard, add oil. 3) Optional: vitamin E oil or grapefruit-seed extract as an antioxidant; 10–20 drops of essential oil for scent and function. 4) Pour into clean, DRY tins or jars; cool 10–60 minutes. Kept cool and dry, a salve lasts about 2 years.

WARNING: clean, dry containers or nothing — contamination is the enemy. Patch-test every new salve on a small skin area first. And a traditional caution worth keeping: do not apply salves to deep puncture wounds — comfrey, for example, can seal the skin surface too fast over a dirty wound.

Illustration: Beeswax melting into infused oil in a double boiler, poured into tins — the test dab checks firmness.

Poultices and compresses

A POULTICE is fresh or dried herb mashed or crushed, moistened, and applied directly to the skin, covered with cloth — it holds plant constituents against a wound, sting, bite, or sprain. Change it when it cools or dries. (The true field-emergency form is the 'spit poultice' — herb chewed and applied — with the obvious sanitation caveat.)

A COMPRESS is a cloth soaked in a strong infusion or decoction (or diluted tincture), wrung out, and applied hot or cold. Apply to intact skin where possible, never seal a deep wound, watch for allergic reactions, and use clean materials throughout.

Infusion vs. decoction — which water extraction when

INFUSION: boiling water poured OVER delicate parts — leaves, flowers, aerial parts — then covered and steeped 10–20 minutes. The covered steep preserves volatile oils and delicate constituents. This is tea.

DECOCTION: hard parts — roots, bark, seeds, berries — SIMMERED in water for 20–45 minutes to extract tough constituents and minerals.

The two combine in the 'decocted tincture': an alcoholic maceration, then a water decoction of the leftover marc, blended together — both solvent worlds in one bottle.

Safety — when NOT to self-treat (read this first)

IDENTIFICATION IS LIFE-OR-DEATH: many medicinal plants have toxic lookalikes (yarrow vs. poison hemlock; comfrey vs. foxglove — see Vol. 2's High-Risk Lookalike Index). Harvest only what you can positively identify; never use moldy material; harvest away from roads, pesticides, and pollution.

DOSAGE CAUTION: natural does not mean safe. Tinctures are concentrated; start low; research interactions (St. John's wort and ginkgo with blood thinners are classic examples); never dose children, pregnant or nursing people, or the seriously ill with field preparations.

CONTAMINATION AVOIDANCE: clean jars, dry hands, clean dry containers; label everything with name, date, ratio, and ingredients.

SEEK PROFESSIONAL CARE — DO NOT SELF-TREAT: deep or dirty puncture wounds, animal bites, venomous bites and stings, eye injuries, chest pain, severe allergic reactions, uncontrolled bleeding, signs of infection (spreading redness, fever, pus), fractures, or anything that is not improving. Field preparations are adjuncts, not substitutes: clean wounds with potable water and cover with a clean dressing.

NOTE — editorial flag: the herbal specifics in this chapter are drawn from herbalist references; a qualified herbalist should review this chapter (toxic lookalikes, contraindications, dosages) before any print edition.