Final answer:
Dulce de leche is made from cow's milk.
Step-by-step explanation:
The dessert dulce de leche is made from cow's milk. Dulce de leche is a thick and sweet caramel-like sauce that is popular in many Latin American countries, particularly in Argentina. It is made by slowly heating sweetened condensed milk until it becomes thick and caramelized. Cow's milk is used as the main ingredient in the production of dulce de leche.