Birch Whisks This page first published: Apr 16, 2018 · Updated: Nov 6, 2019 · by CooksInfo. Copyright © 2020 · This post may contain affiliate links · This blog generates income via ads · Birch whisks are made of fine, stiff birch twigs bundled together. Sometimes the wood may be a wood other than birch. The whisks are flexible, and thus good for light sauces, such as Béchamel or gravy. They won’t scratch non-stick pots and pans. They are not good for heavier work, and obviously, they are not dishwasher-safe.