In a large bowl mix the oil, milk and sugar. Add the yeast and keep it for a minute, then add 4 cups of flour, mix it and cover it for an hour, then add 3/4 cups of flour, salt and baking powder and knead it. In another bowl, mix cocoa, 3/4 cup of sugar and cinnamon. Shape the dough into a large rectangle and Casting 3/4 cups butter, sprinkle with cinnamon mix and roll the dough lengthwise and cut evenly. Put in the baking tray an oil spoon and place a cinnamon roll in it. Cover the baking tray, leave it for half an hour, and put it in the oven at 180 ° C for 25_30 minutes.