Hing paste solidifies in winter due to the congealing of the oil or fat content within the paste at lower temperatures. This is a natural process similar to how coconut oil hardens in cold weather.
Hing, also known as asafoetida, is a resin that is often mixed with wheat flour or rice flour and oil to create a paste. The oil or fat component, which is crucial for binding the hing powder and flour together, is susceptible to temperature changes. In warmer temperatures, the oil remains liquid, keeping the paste soft and pliable. However, when the temperature drops, particularly during winter, the oil's molecules slow down and begin to solidify. This solidification process causes the entire hing paste to harden. The extent of solidification depends on the type of oil used and the severity of the cold. Some hing pastes may become very hard, while others might just become slightly firmer. The flour component also contributes to the solidification, as it can absorb moisture and become more rigid in colder, drier conditions.
To soften solidified hing paste, gently warm it by placing the container in a bowl of warm water for a few minutes. Avoid microwaving it directly, as this can alter its flavor and aroma.