I'm not sure what's actually going on in this recipe, but each ingredient works in cohesion with every other. I'll try to explain my concentrate choices.
TFA Vanilla Bean Gelato — while actually reminding gelato it is a nice smooth vanilla without peppery note. It is sweet and milky which helps to balance out the lemongrass while keeping things vanilla and creamy at the same time.
FA Meringue — used here as a powdered sugar, helps with sweetness, mouthfeel and that "sugar lips" effect that makes you crave for one more hit.
INW Strawberry Shisha — sweet jammy strawberry. Even though many of you thinks that 1.66% is a lot for this aroma fear not, it will be supressed by lemongrass, so 1.66% is just enough. Blends nicely with gelato as a filling.
FLV Lemon Grass — the star and the god of this recipe. Yes, 0.25% is plenty. It reminds fruit circles, lemon zest and lemon candy alltogether while keeping it's own identity. Helps strawberry with it's tart note. Works extremely well with VBG.
CAP Super Sweet — while being optional it seems to make taste better overall. Candies are sweet, you know. Besides that it really helps strawberries.
Recipe is good as shake and vape, but keeps changing through steep into more milky and strawberry version of itself.
Try it.