Up front this tastes like Cinnamon Toast Crunch. It has that smooth sugary cinnamon flavor. You get the spice of the cinnamon without any of the burn or dominance usually associated with it.
In the background there is a creamy custard element that is more complex than basic cereal and adds some rich creaminess to the flavor. The flavors are strong enough to make your mouth water but light enough, even with the custard, that you can keep tugging away without getting tired of it.
The inhale is cinnamon toast crunch. Exhale is custardy cinnamon toast. Really enjoyable flavor. Virtually no throat hit and there seems to be an unusual amount of vapor for a 70/30 blend.