Yes, salt can influence color development during caramelization. It can slightly enhance the Maillard reaction, leading to a deeper, richer color.
Caramelization is the browning of sugar, a complex process involving the thermal decomposition of sugars. While primarily driven by heat, the presence of other compounds can influence the reaction. Salt, or sodium chloride, can act as a catalyst in the Maillard reaction, which often occurs alongside caramelization, especially when amino acids or proteins are present. The Maillard reaction contributes to browning and flavor development. The sodium ions in salt can interact with the sugar molecules, subtly altering the reaction pathways and potentially leading to a slightly accelerated or intensified browning effect. The effect is more noticeable when caramelizing sugars with even trace amounts of proteins or amino acids. The amount of salt used is crucial; too much can negatively impact the flavor, but a small amount can enhance the overall color and complexity of the caramel.
When adding salt to caramel, use a fine sea salt or kosher salt and incorporate it gradually. This ensures even distribution and prevents localized salty spots, allowing you to control the flavor and color development more precisely.