Posted on August 22, 2021August 22, 2021 by WillemSunday/ some Key lime pie A large piece of the 12″ Key lime pie I had bought at Costco ($14.99) is left over from yesterday. I had a piece for dessert tonight (of course). Thomas added the garnish of orange onto the Key lime pie pie (I did not have limes). This pie is made with sweetened condensed milk and with key lime juice from concentrate, says the ingredients label. Key limes are smaller than golf balls, with yellow-green skin that is sometimes splotched with brown. Key lime trees are native to Malaysia, and it is thought that the fruits or seeds first arrived in the Florida Keys in the 1500s with the Spanish.