Petroleum jelly similar. Petroleum jelly is a non-polar hydrophobic (water-repelling) hydrocarbon and insoluble in water. Glycerol is an alcohol that is strongly hydrophilic (water-attracting): by continuously absorbing moisture from the air (hygroscopic), it produces the feeling of wetness on the skin. This feeling of wetness is similar to the feeling of greasiness produced by petroleum jelly. Most uses of petroleum jelly exploit its lubricating and coating properties. Vaseline brand First Aid Petroleum Jelly, or carbolated petroleum jelly containing phenol to give the jelly additional antibacterial effect, has been discontinued. During World War II, a variety of petroleum jelly called "red veterinary petrolatum,"
Grass jelly then cooling the liquid to a jelly-like consistency. This jelly can be cut into cubes or other forms, and then mixed with syrup to produce a drink or dessert thought to have cooling ("yin") properties, which makes it typically consumed during hot weather. The jelly itself is fragrant, with a smoky undertone, and is a translucent dark brown, sometimes perceived to be black. Food coloring may sometimes be added to make it darker. Some other variants of grass jelly, known as green grass jelly, don't require cooking or heating process to make, only requiring a mixture of leaf extracts and