stir up

US /stɜːr ˈʌp/
UK /stɜːr ˈʌp/
"stir up" picture
1.

to cause trouble or excitement

:
His comments always stir up controversy.
Don't stir up trouble where there is none.
2.

to mix something by moving it around with a spoon or stick

:
She used a spoon to stir up the sugar in her coffee.
The chef began to stir up the ingredients in the large pot.