Wow, you're thorough! I can't see me doing that around a campfire though 
For medieval stuff I use an alembic, which is a sort of cone shaped pottery lid with a spiral runnel inside that winds down from the top to a spigot type handle that drips out over a cup or bowl. It's basically steam distillation and is surprisingly effective. If you simmer the plant material gently under a close fitting lid and then let the whole thing cool down without removing the lid, oil and wax will float to the surface. The problem is that so will the plant material, so a mesh that fits above the...
For medieval stuff I use an alembic, which is a sort of cone shaped pottery lid with a spiral runnel inside that winds down from the top to a spigot type handle that drips out over a cup or bowl. It's basically steam distillation and is surprisingly effective. If you simmer the plant material gently under a close fitting lid and then let the whole thing cool down without removing the lid, oil and wax will float to the surface. The problem is that so will the plant material, so a mesh that fits above the...
