Former employee here. I found out that, when making 5 gallons of sweet tea, an entire 4-pound bag of sugar goes in.
Sandwiches with round egg use real, cracked eggs. Folded and scrambled come from packaged goods in the freezer or fridge.
I also had a manager that insisted more people purchase Filet O Fish when it's raining out because they subconsciously associate the watery weather with fish. Anyway, he did some research by poring through sales of Filet O Fish for months and months and comparing it to weather data for each day. Turns out he found something like a 3% increase on rainy days and was very pleased with himself.
Edit: Wow, I will answer some of your questions up here so people can see. The manager voiced his theory one day, and the crews all argued with him about it. This went on for a while. He was committed to proving us wrong, so he secretly pulled the sales numbers at work and did the rest on his own time, never breathing a word until he brought his printed report in to shut us all up.
He did separate Fridays during Lent and compared those days to each other in anticipation of having holes poked in his research. We still did that anyway, of course. As pointless and imperfect as the research was, it was impressive to see his commitment to giving us the middle finger!
My manager used to be on my back all of the time for ‘giving out too much sauce’.
He tried telling me the limit is one per meal.