Yes, salt can reduce bitterness in raw vegetables by drawing out bitter compounds and altering taste perception. A simple brine or sprinkling of salt can significantly improve the flavor.
Many raw vegetables, such as cucumbers, eggplant, and radishes, contain naturally occurring bitter compounds. Salt interacts with these compounds in a couple of ways. First, salt can draw out moisture from the vegetable through osmosis. This moisture often contains some of the bitter compounds, effectively reducing their concentration within the vegetable itself. Second, salt can directly affect our taste perception. It can mask or balance out the bitter taste, making the vegetable more palatable. The process is simple: either soak the cut vegetables in a saltwater brine for about 15-30 minutes, or sprinkle them with salt and let them sit for a similar amount of time before rinsing and consuming. This allows the salt to work its magic, resulting in a less bitter and more enjoyable eating experience.
Don't over-salt! Start with a small amount and taste as you go. Too much salt can make the vegetable unpleasantly salty, defeating the purpose of reducing bitterness. Also, remember to rinse the vegetables thoroughly after salting to remove excess salt.