Picky Eaters: Introduction

Some people are picky eaters and only eat certain foods.

For example, Paul likes pizza, potatoes, pancakes and popcorn, because he only likes foods beginning with the letter ‘P’. He doesn’t like butterbeans and he doesn’t like cheese—well, he does like parmesan cheese.

Can you guess why the picky eaters Alannah, Catherine, Oliver and Youssef like what they like?