Frozen Key Lime Pie with Crushed Sugar Cone Crust and Macadamia Nut Cream

Key lime pie, popular in Key West and other parts of Florida, is made with the Key lime that grows in that state. The Key lime also grows in California and Texas, where it is known as a Mexican lime. Nowadays, you find Key lime pie listed on menus all over the United States, but real Key limes are seldom used. Key limes are distinctive, about the size of a Ping-Pong ball. They have a thin yellow-green rind, and the juice is less astringent and more fragrant than that of regular limes. If yo