I'm a little confused.
You say: "you started stripping with alcohol which renders it down to CCO or RSO (Rick Simpson oil) so I guess it’s not a FECO at first, or until the MCT oil is added…. Anywho IIRC- a thru FECO is done by extracting directly into a carrier oil like olive oil, coconut oil...
I have been having an apparent slight problem with making very high potency MCT oil-based Cannabis tinctures. My methods are:
1. Extract 30g of weed using QWET method (500ml ethyl alcohol, extract for 3 10-minute periods in freezer with 1 minute gentle swirl between periods.)
2. Evaporate off...