I have used that expression so often in class that my students don’t believe me anymore when I tell them an exercise is easy peasy…
What it means:
This is a British idiom. It means that something is very easy. This idiom also exists in a longer version easy peasy lemon squeezy.
When to use it:
You can use this idiom anytime you want! It is fairly informal but not rude or impolite at all.
Anything you do easily you can say it is easy peasy! Here is an example:
Fulanito: This gazpacho soup is so good! How do you make it? Is it difficult?
Marine: Not at all! It’s easy peasy! Just mix tomatoes, cucumbers, peppers, onions, garlic, bread water and vinegar and that’s it. Your soup is ready.