If your dip seems too thick once it has cooled to warm, you can stir in a bit more evaporated milk to thin it out some. Depending on how thick it is and how thin you want it, you may only need 2 Tablespoons of milk, or you might need half a cup or more. Just add it a little at a time and stir well. Check the texture, and stop adding milk when you're happy with the thickness.