m0useanswered grow question 11 hours ago keif as in the bottom of the grinder crystal dust? If yes. I would aim for 2g into 1cup but I am a light weight. could boost it up to 4-6g as well.
Even if it was 100% thc, and we working off of 2g, and to be clear; its not 100% thc, that would be 2000mg. no telling if the 12-15% ratio is accurate as growing conditions would effect that a lot.
so...
2000mg THC / 1cup 250ml fat = 8mg/ml
12-15% of 8g/ml = 0.96-1.2mg/ml
I would say it could be anywhere from 0.48-0.60 g/ml on the safe side but could be wrong. their is tons of extra stuff in trichomes so its hard to calculate and keif is not pure trichomes. add that into food and lets say you bake a batch of muffins with 1 cup of oil, and they make 12 muffins, that's an estimated 150mg total THC at 0.6g/ml concentration, in 12 muffins is about 12.5mg per muffin.
This is all ruff estimates and that's a good dose for me, I like to keep it around 2-5mg, but again if you want a fuck you up style strength go bigger with 6g of keif. I also would likely strain it via a metal strainer or some cheese cloth but nothing to fancy the bits left over won't be to bad in any baked goods or if you drizzle this on a salad.
The infusion of said product into the item is were it gets tricky. I like to use sealed mason jars inside hot water. and I burp at the beginning and half way point in the bath. let em soak at 90c for 8hrs +. makes nice oil. can also let it sit on the shelf room temps for a weeks shaking it every now and then and it will also extract it just not as fast and not as strong. Some of terps and smell will leave with heat applied and will have better transfer with the cold method done over longer time. I use a baby bottle warmer that has an auto off feature. its like a shity sous vide but the idea is the same.
To test your dose, have a edible at lets say 10mg. then a few days later eat your creation and see if they are about the same. or send it off to a lab and test it.
Good Luck!