Read the dialog and answer the question.

Jessica: I really love this meal.

Jammy: Thanks. I was hoping that you all will enjoy this meal.

Daren: Where did you learn to cook this meal? This is perfect.

Jammy: I got a cookbook for my birthday. Then, I decided to try out some of the recipes.

Claire: The meatball is out of this world!

Jammy: Thank you.

When did Jammy get a cookbook?