FOSDEM would not be FOSDEM without waffles... What if we coud use Postgres to make waffles ? During this talk we will use the excuse of FOSDEM and Brussels to create an extension that will look for the best waffle recipe and use Postgres to display it. During this journey, on top of making delicious waffles, we will : - understand what an extension is - find the steps needed to create an extension - make this work all together - install our extension - display the best Waffle recipe.