Ok, so I've been researching about Pine pitch/sap/resin in the last few hours and here's what I found:
What is sap/resin/pitch?All of these are names given to the sticky material that Pine trees exude to cover their wounds and prevent bugs and infections from creeping in. Functionally they appear to be pretty much the same (at least in the context of pines), but sap is the most liquid sugary form (and it's what trees usually use to transport nutrients), while resin is the solid and hardened version of it. Pitch seems to be the intermediate, not quite either. The ones we're more interested in is the pitch and resin, which are sometimes used interchangeably. I'll refer to it as resin below.
https://downandout.wordpress.com/2013/10/17/whats-the-difference-pine-sap-pitch-or-resin/What about pine tar?This one is confusing... pine tar is kind of "liquid smoke", made by burning resinous wood ("fatwood") with a minimal amount of air, and the tar would then flow out of it. It seems to be best to use dead dried fatwood, rather than a fresh one, oddly. Its uses include waterproofing, firewood, preserving ropes and cordage, sealing material, etc. This doesn't seem that relevant to our intended uses, unless we wanted to use it to paint clinkered punts, which seems like a waste of menu entries when we have the very similar pitch with almost identical uses. It seems to also result in charcoal, and appears to be able to be turned into pitch glue by boiling. Seems to be a roundabout way to achieve the same thing, though
Can be used to make soap, but this isn't quite Dwarf Fortress
https://www.puuvene.net/phuhta/artikkelit/tar.htmlhttps://www.survival-manual.com/pine-tar.phpVideo of a guy doing it (INVOLVES A SHOVEL!):
https://www.youtube.com/watch?v=PNf2Kre7ylIWhat can pine resin be used for?Mainly it can be used for creating "natural" glue and (surprisingly) medicine. While resin by itself is not usable (but is easily storable), it can be heated to become malleable and sticky, but is usually full of impurities like bugs and bark.
How to make pine pitch glue?While there's some optional ingredients that you can use depending on your needs or resources, the main ingredients are a tiny bit of powdered charcoal and some resin.
Just use a knife to cut/scrape it off the bark. It's that simple, though it'll obviously have some impurities. While it's possible to tap a tree, it involves more preparation, tools and damage to the tree that aren't very well modeled in-game. Also, collecting naturally occurring resin feels much more in tune with Nature
- Grind some charcoal into a fine powder
You don't seem to need much charcoal, burning the tip of a branch might be enough
This has to be done carefully because it's extremely flammable. A double boiler (a pot of water with another pot inside it) is advisable, to control the heat.
A sieve can be used, but it can also be done manually, I guess.
- Mix the resin with the charcoal
It should still be sticky, but not so much as before. You don't really need to do it with your hands, of course
- [OPTIONAL] Add filler material
This isn't really needed, but seems to help strengthen the glue. The kind of material often suggested is rabbit/deer poop (yes, their dried and ground droppings) and finely ground plant matter. Animal fur (like your cat's fallen fur) could also be used. This is NOT necessary at all
- [OPTIONAL] Add fat, tallow, or beeswax
This is only to make it more flexible and easy to work with, but is also absolutely unnecessary
- Mix thoroughly and then let it cool a bit
It doesn't seem like you should let it boil too much or at all, since there's also the risk of it catching fire. That seems to be absolutely dangerous
Use a stick to grab/roll a bit on the end, cool it so it solidifies and then get some more. Eventually you'll have the tip full of pitch glue to carry around
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The proportion of sap to charcoal is up for debate, but it seems to be 4 resin to 1 charcoal/filler, or even 2 resin to 1 charcoal. This isn't really really something easy to mass produce, so I think that for game purposes we can ignore the charcoal and filler. They could be made optional ingredients in order to "teach", but you could accidentally be using them when you don't really need to.
Some videos:
Primitive, no fillers:
https://www.youtube.com/watch?v=9-5E_aGFmW0Uses a frying pan, but explains the whole process and shows use of resin as "bandage":
https://www.youtube.com/watch?v=Vr1tQuq1rIsYou can see how flammable the resin is about 6:00 on this one, only purifying resin to be used later:
https://www.youtube.com/watch?v=XOxwFwahpwg?t=360Some sources (there's a lot more, but these are enough):
https://www.survival-manual.com/pine-pitch-glue.phpUsing double boiler method, with pictures:
http://www.primitiveways.com/pine_pitch_stick.htmlWhat about the medicine?Remember when I mentioned that pines ooze out the sap to protect them from infections and bugs? It seems that those properties extend to humans as well! Besides the melted resin "bandage" which can be used to close wounds and stop bleeding, it also has some properties such as "antiseptic, astringent, anti-inflammatory, antibacterial". Sound familiar? They sure are
Rather than simply use the raw or purified resin, one could possibly make a salve. The steps are simply: Heat resin with oil (resin is oil-soluble) in a double boiler, then strain it to remove impurities, and finally heat it again with beeswax. One substitute for the olive oil is some herb-infused oil, of which yarrow is mentioned around as commonly used (and is in the game already). It might need a bit more research, but it seems that you can also make oil from birch-bark (holy crap, this tree is a godsend!). I'm willing to roleplay the existing Bark-water as oil, but we have plenty of menu space in cooking, really.
I'm at a loss in regards to beeswax, but it seems some vegans (I'm a vegan but I'm not into that stuff) make healing salves using plant oils and some substitutes like cocoa butter (lol), bayberry wax and some other exotic stuff not relevant to Finland. The beeswax also acts as a preservative, so it can spoil. Perhaps using milk or just ignoring this detail?
While it seems silly to even mention the salve, what if we could emulate it?
I'm not sure if it's possible, but what if we create a HERB which does not grow anywhere at all and is only possible to be created using a cooking or crafting recipe? This would make it possible to use it as seasoning (silly, I know), but would also let you use it along with bandages, thus getting its healing effects as defined in the herb file! If possible, this could in theory be expanded to other plants and herbs, though its only use would be to make your supply of leaves/herbs last longer, maybe.
This "hack" could be used for soap as well, but does it make sense?
Sources:
Short description of uses:
https://survivalsherpa.wordpress.com/2015/02/05/16-uses-of-sticky-pine-sap-for-wilderness-survival-and-self-reliance/Very detailed and scientific:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5434829/Pine resin salve:
https://theherbalacademy.com/make-pine-resin-salve/Birch oil:
http://ettebo.se/en/how-to-make-birch-oil/ConclusionPines and birches are the best. It's very simple to collect resin and it can then be used as a makeshift bandage, to stop bleeding, is antibacterial, and it can also be made into a healing salve. There is some overlap between pine pitch glue and tar, but unless we want to make soap it doesn't seem worth it to distinguish them. Also, tar seems too much of a hassle compared to how easy pitch glue is to make.
It seems that Neanderthals used to make birch-bark pitch glue, but I haven't gotten around to those methods and how it differs from resin. I would assume that you can't just substitute resin for bark and get the same results, though.
Sorry for the long post, but this was fun to learn about!
Edit: Most importantly for the recipe, I think making pitch glue from resin's waiting time should be reduced from the \8h\. It's actually a relatively quick process,but you'll have to keep an eye on it in order to not screw it up
Edit2: I've tried making a recipe that creates a custom herb, but it's not working. I'd appreciate some tips for making it work. One problem I found is that it has to be a leaf or flower in order to be used in treatment, unless we make a "herb" that can be threshed for an appropriate amount of leaves/flowers corresponding to the weight of the salve. I guess it could then be put in a bowl or something?