I steeped the new Midnight Frost and Tropico in my ultrasonic cleaner, and added a couple of days of traditional steeping for good measure.
Both versions of the Midnight Frost are the same (15% works for me). I think it just adds to the mystery (sorry Yimmey, I'm not much help here). I still can't smell the menthol when I sniff the extract, though. My olfactory must be defective because it is definitely there when vaping. At any rate, I would really like to know what FranC gets with the new mix; it could be that our palettes are so different that I'm just more sensitive to different aspects of the flavor.
Tropico is the same for me as when I dripped a bit of the first batch. I still get Tropical Lifesavers with pineapple up front. I did discover that I very much like it with Iced Tea.