Off the heat, whisk in the butter a little at a time.

Whisk in water, a little at a time until smooth.

Turn the heat to low and whisk in the mustard.

Whisk in the oil and season to taste with salt.

Whisk in the beer and cook for 5 minutes longer.

If you were to be whisked away anywhere in the world?

Beginning a drop at a time, whisk in vegetable oil.

Whisk in the peanut oil, beginning a drop at a time.

Reduce heat to very low and whisk in the butter, a small piece at a time.

Remove the pan from the heat and whisk in the oil.