"Quick whirl" means to do something rapidly or briefly. It refers to a fast and short spinning or turning motion.
Sentences with «quick whirl»
It didn't seem fine enough, so I threw it in the blender and gave it a couple of quick whirls. (101cookbooks.com)
It wasn't as smoothly blended as I expected, and it was unstrained, so I was surprised by the grittiness (but a quick whirl in the Vitababy took care of that). (chefambershea.com)
If you do overdress them, a quick whirl in the salad spinner will shake off any excess. (cookinglight.com)