This one's Beef fat.

And before you can use it for cooking it needs to be rendered (melted down) and turned into Tallow. Which is easy to do. 

When you render Beef fat and cool it, it separates into two layers. Tallow on the top – which is clarified fat – and under that is a layer of beef extract held in a jelly, that is useful for stock. 

Tallow made from Beef fat is used for frying. It's especially good for chips – as any chef will tell you.

And, believe it or not, Tallow's actually a healthy fat. Even more so if it comes from grass fed beef. Which is just one of the reasons it's making – a scientifically supported – comeback.