My understanding is you probably won't practically saturate something like coconut oil.

I used a sous vide cooker. Id grind the herb and put it in a mason jar and decarb it around 180f for an hour or two, shaking the jar occasionally. Then just add the oil to the jar and set it to 195f, simply because that was the max setting. Id leave it in there for at least 6 hours, but I think that majority of the infusion happens in like the first hour or two.

The main idea here is theres certain temps where cannabinoids start breaking down so the sous vide prevents that. You're not only getting a large portion of the THC but also most of the ones that only occur in trace amounts. Also the mason jar in the water keeps the massive skunk aura contained.

My sweet spot for general consumption was 2 grams of herb to 1 cup of oil. I never went too crazy with the oil since it was easy enough to just eat another brownie or cookie. If I was making a personal batch or some for serious medical use id double that amount, but i genuinely never felt that it was practical to go much stronger. The quality and strain matter a lot too so it's very much a trail and error thing.

I did find that i could substitute the oil directly for peanut butter to make weed peanut butter. A very tasty and convenient way to become way too fucking stoned.