Instructions

  1. In a 2 quart saucepan mix the sugar, flour, cocoa together.
  2. Add the butter and milk.
  3. On a medium heat bring to a low boil and cook till thick, whisking all the time as you don't want it to stick and burn.
  4. Cook about an extra 1/2 to 1 minute.
  5. Remove from heat and add the vanilla.
  6. Put through a sieve to get any would-be lumps out.
  7. Result is a creamy, thick sauce.