Dulce de Leche

Procedure

1. Combine the milk, sugar, and baking soda in a heavy saucepan. Set over medium heat. Bring to a slow boil without stirring.
2. As the mixture approaches the boil, it will foam up. Quickly remove it from the heat before it boils over; stir.
3. Turn the heat to low, set the pan back on the heat, and cook slowly, stirring frequently with a w