When very hot, remove and whisk in the cold butter one pat at a time.

Whisk in remaining butter a tablespoon at a time.

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

When reduced by half, whisk butter pieces in one at a time.

He produced a small brush and lightly whisked at the surface of the lens.

It is thickened with cold butter, whisked in a little at a time.

Whisk in the butter or oil a little at a time, until the sauce is smooth and thick.

They passed through a set of glass doors that whisked open silently at their approach, and moved down yet another corridor.

Who knew when we would have to whisk her away at the slightest inkling of a kidnapping.

Remove the pans from the heat, and whisk in the butter, a piece at a time, until completely incorporated.