I bought some stevia powder today and tried to make waffles with it, replacing the sugar. However, no matter how much stevia I poured into the dough (carefully adding tea spoon by tea spoon, tasting it each time), I couldn't really taste any sweetness.
Other family members said the dough was already very sweet.
Then I tried a pinch of stevia powder purely, and it tasted slightly bitter at first and minimally sweet after a few seconds.
From the description, stevia should be magnitudes sweeter than sugar though.
Is it possible that some people don't have the necessary taste receptors that would react on stevia and are therefore "taste blind" to its sweetness? If so, are there any numbers or guesses how many people are unable to taste it? I could not find any online resources about that, but it would be useful to know how likely e.g. a guest will not be able to taste it.
Additionally, might there be any "workarounds", like adding something to make the stevia sweetness available?