Which taste is often associated with spoiled or unripe foods?

The taste that is often associated with spoiled or unripe foods is sour. This connection arises from the presence of organic acids that develop in foods as they begin to spoil. For instance, unripe fruits tend to have a more acidic profile, contributing to a sour taste, which can signal that they are not yet ready for consumption. Additionally, sourness can be a natural defense mechanism for humans, prompting us to avoid potentially harmful substances, including spoiled foods. By detecting sourness, individuals can make informed decisions about food safety and ripeness, highlighting the evolutionary importance of this taste in food selection.