The name of this caramel-like confection, from Argentina and Uruguay, loosely translates to "milk candy": In a traditional process, sugar and milk are cooked over low heat for hours, until the mixture becomes thick and golden.
Source: Everyday Food, November 2010
Yield Makes 2 cups
6 cups whole milk
1 1/2 cups sugar
1/4 teaspoon coarse salt
3/4 teaspoon baking soda
In a medium saucepan, bring milk, sugar, and salt to a simmer over medium. Remove from heat and whisk in baking soda (mixture will foam). Return to a simmer and cook over low, stirring occasionally and skimming off any foam, until sauce is deep golden brown and lightly coats a spoon, 45 minutes to 1 hour. Pour through a fine-mesh sieve into a heatproof bowl.