Halverson, Christine. (2006, March 17). Uses for Vinegar: Cooking Tips. Retrieved from https://recipes.howstuffworks.com/tools-and-techniques/uses-for-vinegar-cooking-tips-ga.htm Hoffman, Kristin. (2019, December 31). Function of Sugar in Baking and Varieties of Sugar. Retrieved from https://bakerbettie.com/function-of-sugar-in-baking/ Hoffman, Kristin. (2019, December 31). Function of Flour in Baking, Differences in Varieties of Flour. Retrieved from https://bakerbettie.com/varieties-flour/ Stafford, Gemma. (2017, November 12). Why Do You Mix Dry Ingredients Separately. Retrieved from https://www.biggerbolderbaking.com/mix-wet-dry-ingredients-separately/ Taste Essence (2010, April 16). These Substitutes for Vinegar are Near-perfect Replacements. Retrieved from https://tastessence.com/vinegar-substitute Weston, Nicole. (2008, August 1). Using Vinegar in Baking. Retrieved from https://bakingbites.com/2008/08/using-vinegar-in-baking/ As for the pictures and the recipe itself, all belong to me, the recipe is a family one and doesn't belong to another source of my knowledge.