Where can I find Rocket in Ursem?

Rocket can also be found in these cities:

Abbekerk Alkmaar Castricum Dirkshorn Groet Hoogwoud Hoorn Medemblik Midwoud Oudorp Petten Sint Maartensvlotbrug Wijk aan Zee Zaandijk

You can also find this in Ursem:

Sausage Margarine Fish TK Drinks Olive Oil Potato Specialties Morello Cherries Cola Vegetable Oil