If you could eat only one food for a week, what would it be?

I'm wondering if there would be a run on supermarkets and you could reach just one item of food before all the shelves were empty, what food would you pick to eat for a week?

Think about it: one food, morning, afternoon, evening, snacks... For seven days.

Very curious to hear what that food would be for you!

--- Sincerely,
--- MarQ