One phrase, 2 meanings. Learn them one at a time, then test yourself.
Meaning 1 · most common
to make a meal or dish quickly and easily, often with whatever you have
Examples
I can whip up a quick pasta if you're hungry.
She whipped up an omelette in about five minutes.
Meaning 2
to deliberately create or increase a strong feeling, especially excitement, anger, or fear, in a group of people
Examples
The politician tried to whip up anger among the crowd with his speech.
A: Why is everyone so upset about this issue all of a sudden?
B: I think the media really whipped up a lot of fear about it.
Common mistake
Not: He whipped up with anger in the crowd.
Say: He whipped up anger in the crowd.
'Whip up' takes the object directly — no 'with'.
Another example
In some cases, social media can whip up strong emotions, making it difficult for people to have calm discussions about controversial topics.
Tell it apart
He whipped up the crowd's anger.
He calmed the crowd down.
Goes with
Pick a meaning and say it out loud. Save the ones you mix up.