Igneous Rocks are formed by crystallization from a liquid, or magma. They include two types. Magma is a mixture of liquid rock, crystals, and gas. Characterized by a wide range of chemical compositions, with high temperature, and properties of a liquid.
One of the earliest forerunners of modern ice cream was a recipe brought back to Italy from China by Marco Polo. The recipe was very like what we would call sherbet. From there, it is thought that Catherine de Medici brought the dessert to France when she married King Henry II in 1533.
According to the book Sugar and Snow: A History of Ice Cream Making by Jeri Quinzio, the ice cream sandwich was created in 1899 by an unknown pushcart peddler in the Bowery neighborhood of New York City. These sandwiches consisted of vanilla ice cream pressed between two thin graham wafers.