Where can I find Rocket in Avenhorn?

Rocket can also be found in these cities:

Abbekerk Alkmaar Bovenkarspel Dirkshorn Groet Hoogwoud Hoorn Medemblik Midwoud Oudorp Petten Sint Maartensvlotbrug Ursem Zaandijk

You can also find this in Avenhorn:

Iced Tea Sunflower Oil Wine Sweet Potatoes Milk Energy Drinks Rice Red Wine Panettone Beer