Sometimes we search too hard for examples of mathematics in the real-world. Or, is it that some people pretend they are using mathematics, when they are not?
Consider E. Bragg's cookbook Cooking Without a Grain of Salt (1998), which includes the recipe "Roast Lamb Fibonacci." Of course, I had to check out that intriguing recipe.
Under the recipe's title, Bragg writes: "This dish is named for the Italian mathematician who discovered a numerical sequence 0, 1, 1, 2, 3, 5, 8, 13, etc., that appears everywhere in nature and art. The number of garlic cloves in this recipe takes our example of the sequence one step further."
Looking at the list of ingredients, I expected to see the Fibonacci sequence...but was disappointed to see no signs of a sequence except for the need for "21 unpeeled, whole garlic cloves."
Now, I may make this recipe just for fun...but by this author's criteria, it seems every recipe that asks for 1 of something would be of the Fibonacci-type.
C.B. (HI) adds: "...anything with Zero ingredients would also be a Fibonacci recipe, which means that every recipe is since everything has at least one ingredient NOT in it."