Thanks Sunfire96 they email me from time to time and this was the latest products quite intreaging but expensive stuff at 40$ / 200ml but as you say the dosing rates must be quite low.
It's a distillation type product another brewer I've watched using it was Plum flavour in a PluM PORTER he did a drop by drop dosing.
Maybe something better suited to larger size batches..
Here's an early taster of Ozarks Q4 Amber Gluten free
View attachment 27179
Oh some malty flavours going on in there it did finish quite high 1.033 so ALOT of residual sweetness that's comming across as malt sweetness...