I've had a bunch of
N-Zorbit sitting at the back of the pantry for a while. N-Zorbit is
a tapioca maltodextrin which absorbs 2 times its weight of oil/fat. N-Zorbit is very very light, 1 litre = 100 grams. 1 litre would absorb 192mls of olive oil (1 litre = 920 grams). It turns in to a free flowing powder that dissolves back in to oil in the mouth.
Blitz in the food processor with some truffle oil, ready to pass through a sieve to get rid of any lumps.
Very light coating of oil on the popcorn then add the powder.