I started TFA strawberries n cream @8% w .25% sucrolose. Ended w 13% 1% n it's ok kinda like strawberry jello flavor was rather weak @ 8 , 10, 12, might go 15 or 12-13 n reorder some em for a 1-2 % add in. All done 5ml 50/50 no nic hopefully em will bring out flav more also tried a drop to 3 of citric acid in each after test w no increase in flavor. Every batch steep time was 6 day's. Even @ 13% I feel more flavor is needed Ymmv.