I finally got around to turning our comfrey patch into salve this season, and after a few batches I wanted to share what actually worked, since most recipes I found skipped the details that matter.
What worked for me:
- Leaf only, never root. The pyrrolizidine alkaloid concentration is much higher in the root, so I keep the root for the compost tea and use only leaves for anything that touches skin.
- Drying the leaves first (2-3 days until crumbly) before infusing. My first attempt with fresh leaves made the oil go cloudy - too much moisture, and it molded within a month.
- Slow infusion in olive oil over a double boiler, 2-3 hours on the lowest heat. Faster stovetop infusions smelled "cooked" and lost the deep green color.
- Ratio that set well: about 1 ounce of beeswax per cup of infused oil. The spoon test (dip a cold spoon, let it set, check firmness) saved me from a too-hard batch.
What I'd do differently: label everything immediately. Comfrey salve looks identical to my plantain salve once it's in the tin, and comfrey is external-use-only on unbroken skin - not something you want to mix up with a salve you'd use on scrapes.
I wrote up the full process with measurements and the safety notes here if anyone wants the step-by-step:
https://growforageheal.com/comfrey-salve-recipe/
Curious what others do with the alkaloid question - do you use comfrey salve on broken skin at all, or stick to bruises/sprains only?
.png)
