I have been long wanting to make dulce-de-leche, but either didn't have enough milk, or didn't have time to do it. When I finally got to make this, the product came out wrong because I changed the recipe myself. I was wondering a bit baking soda will do the work since the original recipe calls for 1/8 tsp of it. I didn't realize I was wrong until the milk was thickened to the end but the color of it was still pale white. It didn't affect the taste, however, for a perfect dulce-de-leche (the picture underneath), I will make it again.