input question: Make mayo substitute.

output answer: Blend 1 egg together with 150 ml of olive oil.

input question: how to clean a cast iron skillet

output answer: pour some coarse salt into the pan and use half a potato to rub it in until that mess has broken up and can be rinsed away.

input question: To absorb extra salt that has been added to a dish,

output answer:
add a peeled potato in to take in some of the salt.