Yes, salt can effectively balance bitterness in food by suppressing the perception of bitter compounds and enhancing other flavors. A small amount of salt can significantly improve the overall taste.
Salt interacts with our taste receptors in a complex way. While it primarily registers as salty, it also has the ability to modulate other tastes, including bitterness. When salt is added to a dish that is too bitter, it can mask the bitter compounds, making them less noticeable. This happens because salt ions interfere with the receptors that detect bitterness.
Furthermore, salt enhances the perception of sweetness and umami, which can further balance the bitterness. By bringing out these other flavors, salt creates a more harmonious and palatable taste profile. The key is to use salt judiciously; too much salt will simply make the dish salty, defeating the purpose. Start with a small pinch and taste as you go, adding more until the bitterness is reduced to a desirable level. This technique works particularly well with vegetables like broccoli, kale, and Brussels sprouts, which naturally contain bitter compounds.
When balancing bitterness with salt, use a fine-grained salt for even distribution. Coarse salt can create pockets of saltiness and won't blend as effectively.