the.com/whip up

means To create or prepare something quickly and energetically, especially food, enthusiasm, or a crowd's emotions.

from Built from "whip," a word of Germanic stock (related to Middle Dutch and Low German terms for quick, lashing movement) that likely began as an imitation of the sound a flicking cord makes. The cooking sense — beating eggs or cream into froth with fast strokes — gave "whip up" its kitchen life, and from there it spread by metaphor: just as you lash air into batter, you can lash a crowd into a frenzy or a meal into existence in minutes. The "up" adds that sense of bringing something into being from nothing, the way "cook up" or "stir up" do.