Must is a hard nut to crack, but it has a sweet kernel.

Must is a hard nut to crack, but it has a sweet kernel.

You must crack the nuts before you can eat the kernel.

China is going to be an extremely tough nut to crack.

It really is a case of taking a sledge hammer to crack a nut.

Experiment to me Is every one I meet If it contain a Kernel? The Figure of a Nut Presents upon a Tree Equally plausibly, But Meat within, is requisite To Squirrels, and to Me