Kaley Cuoco Displays Her Churning Desire With Johnny Galecki on ‘Big Bang Theory’ Set (Photo)

Star of CBS sitcom gets buttered up in behind-the-scenes look

Way to churn up some intrigue, Kaley Cuoco.

“The Big Bang Theory” star Cuoco teased viewers of the CBS comedy on Thursday with a mysterious photo of herself on the set of the show, and a challenge to her fans.

“Anyone have a clue what this is??” Cuoco wrote. “Well it’s all part of tonight’s all new @bigbangtheory_cbs … don’t miss the fun!”

The photo depicted Cuoco gripping the handle of a wooden instrument, as her castmate Johnny Galecki looked on with a puzzled expression on his face.

Alas, Cuoco’s fans apparently have a keen knowledge of antiquated domestic tools, as a number of them were quick to guess that the instrument was, in fact, a butter churn.

Perhaps Penny and Leonard are due for a trip to Amish country in Thursday’s episode?

Fans will discover the mystery when the episode airs at 8 p.m. In the meanwhile, enjoy the sight of Cuoco buttering herself up.