Tres Leches Rum Cake. Up the ante of your favorite cake with Tres Leches Rum Cake. Sour cream, a splash of rum and nutmeg make this Tres Leches Rum Cake a super-moist dessert. Please use alcohol responsibly.Click to see full answer. In this way, where is Tres Leches from originally? Mexico One may also ask, what does tres leches taste like? Tres Leches Cake | TASTE. Tres leches (or “three milks”) cake uses a combination of condensed milk, evaporated milk, and regular cow’s milk to create a spongy, custardy cake that’s soaked through with a sweet, milky sauce. Keeping this in view, why is it called tres leches cake? Also called Three-Milk Cake and Tres Leches Cake. What makes it unusual is that after baked, it is perforated and soaked in a mixture of three different milk products: evaporated milk, sweetened condensed milk, and whole milk or heavy cream, hence the name Tres Leches.How do you make tres leches cake from scratch? Ingredients 1 cup all-purpose flour. 1 1/2 teaspoons baking powder. 5 large eggs , separated. 1 cup granulated sugar , divided. 1/3 cup whole milk. 1 teaspoon vanilla extract. 12 ounce can evaporated milk. 14 ounce can sweetened condensed milk.