What is an insanely cheap meal you would still eat as a millionaire?

As a millionaire or as a near-homeless college student, what's a meal you'd eat regardless?

I already having a feeling that most foods are going to involve rice and potatoes to be honest since those are easier to get. Or maybe it's just good enough that, why not?

What is an insanely cheap meal you would still eat as a millionaire?
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