Taste Modulation

Traditional masking works by distraction: put enough of a pleasant smell over an unpleasant taste and you notice the bad one less. Modulation works further upstream, on the receptors themselves.

Bitter blockers interfere with the bitter receptors on your tongue. There are about two dozen of them, and different bitter substances hit different ones — which is why a blocker that works on caffeine may do nothing for a plant protein. "We have a bitter blocker" is not an answer to a masking brief until you know what the bitterness is.

Sweetness modifiers work on the sweet receptor, making a given amount of sweetener taste sweeter. That lets you use less rather than swap for something else.

Mouthfeel and kokumi compounds restore the body and length that sugar or fat used to provide.

The practical change is that a sugar-reduction brief no longer has to be solved with sweetener chemistry alone. The trade-off is that modulators are powerful, narrow and very sensitive to what else is in the product — how one performs in water tells you almost nothing about how it will perform in yours.