Dulce de leche

1 quart whole milk
12 ounces sugar, approximately 1 1/2 cups
1 vanilla bean, split and seeds scraped
1/2 teaspoon baking soda

Combine the milk, sugar, vanilla bean and seeds in a large, 4-quart saucepan and place over medium heat. Bring to a simmer, stirring occasionally, until the sugar has dissolved. Once the sugar has dissolved, add the baking soda and stir to combine. Reduce the heat to low and cook uncovered at a bare simmer. Stir occasionally, but do not re-incorporate the foam that appears on the top of the mixture. Continue to cook for 1 hour. Remove the vanilla bean after 1 hour and continue to cook until the mixture is a dark caramel color and has reduced to about 1 cup, approximately 1 1/2 to 2 hours. Strain the mixture through a fine mesh strainer. Store in the refrigerator in a sealed container for up to a month.

NOTES:Recipe courtesy Alton Brown from Food Network. You can also cheat and make this the easy way by putting an unopened can of sweetened condensed milk in the crock pot(covered in water) for 6-8 hours on low. Let it cool a little bit before you try opening it. This stuff is so good! I used to eat it so much on my mission.