let's make a Spanish omelet.
great. what do we need?
ok. if says here you need some olive oil. Do we have any olive oil?
No. we don't, but it doesn't matter; we have some corn oil. That will do.
Next, we need some potatoes, a large onion, and a red pepper.
We don't have a red pepper
Never mind. We can use a green pepper.
ok. and then we need some eggs. Four eggs.
ok! Let's begin!