Class II (E150b) Caramel Colour, also known as Caustic Sulphite Caramel, is a light brown viscous liquid or powder created through controlled cooking of sugars. It exhibits a strong negative colloidal charge. In the process of caramelization, food-grade acids, bases, or salts, along with sulphite compounds and without ammonia compounds, are utilized. Class II (E150b) caramel colours are particularly well-suited for applications where acid and tannin stability, as well as alcohol solubility, are essential.