Too little salt can make a dish taste bland and lifeless, as salt enhances flavors and balances sweetness, while too much salt, although undesirable, can sometimes be mitigated with other ingredients.
Salt plays a crucial role in cooking beyond just adding a salty taste. It enhances the natural flavors of ingredients, making them more vibrant and pronounced. It also balances sweetness and acidity, creating a more harmonious and complex flavor profile. When there's too little salt, these flavors remain muted, resulting in a dish that tastes flat and uninteresting. The individual components of the dish may not come together cohesively, leaving the overall experience unsatisfying.
While too much salt is certainly a problem, it's often easier to address than a lack of salt. Depending on the dish, you might be able to dilute the saltiness by adding more of the other ingredients, such as vegetables, liquids (water, broth), or even a touch of sweetness. In some cases, an acidic element like lemon juice or vinegar can help to cut through the saltiness. However, if there's not enough salt, there's often no way to fully recover the dish's potential flavor. You can add more salt, but it might not integrate properly and could just taste like added salt rather than enhancing the existing flavors.
Always taste your food throughout the cooking process and season gradually. It's easier to add more salt than to remove it. Start with a small amount and adjust to taste, ensuring the salt is well-distributed throughout the dish.