Sad, isn't it? Before the end of the year I'll be trying again to make some brandy.
Yeast makes quite the difference in terms of esterification and the resulting flavours. I've no "which is best" pointers beyond trying a cider or wine yeast intended for enhancing fruity flavours. My usual go-to in this space is EC1118 (more of a wine yeast), whichever sounds like the right ester profile in the Safcider range, or even an M02. The other thought I'm going to progress with is to cheat a little if necessary, thinking along the lines of macerating but then you are up against flavour stability and shelf life etc. Not sure how a hundred or so ppm of preservative would help retain that (i.e. sodium benzoate and potassium sorbate), but I want to experiment and find out.
Re #1: Yeah, quality control is hard. Lots of fruit flavour comes with the skin (being cautious of pith etc.), and I'm wondering how far I could push into that (vs cost and effort), using the rest to make some kind of sauce etc. so I'm not wasting anything.
#2: Perhaps try concentrating your juices by lightly simmering off half the liquid? Means you'll need twice as much to start with though.
#3: Pretty much my commentary above.
#4: Essential oils, particularly in citrus, sometimes are soluble in high proof. I watch a very well made and criminally undersubscribed youtube channel called Art of Drink, and recommend you check out this video which might help:
https://www.youtube.com/watch?v=FSL6pVr ... ArtofDrink#5: I'm not sold on the right method, but I'd anticipate pot still probably the way to go here. Reflux with a couple bubble plates would also allow tighter cuts and better blending for flavour later though. :think: