Heat a large pot over medium heat and add the butter, sugar, milk, karo syrup, vanilla and cocoa. Heat to a boil, stirring occasionally.
Remove from heat and quickly add the baking soda, stirring quickly. It will foam up rather quickly, but try to put it back on the heat for 30-60 seconds, stirring the entire time. Do not let it boil over. If your pot was not big enough and it's trying to boil over, leave it off of the heat. Serve immediately.
A large pot is essential to avoid boil over
Creamy Chocolate Syrup
Amount Per Serving (1 g)
Calories 152Calories from Fat 72
% Daily Value*
Saturated Fat 5g31%
Vitamin A 269IU5%
* Percent Daily Values are based on a 2000 calorie diet.