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Soap Bark Foamer Preparation from Austin's Roosevelt Room

An ingredient used as a foaming agent in both foods and in beauty products like shampoo and toothpaste is soap bark (Quillaja Saponaria). Note that this is different from soapwort (Saponaria Officinalis). This can be used as a foamer in cocktails in place of egg whites. Quillaja Saponaria can be found both in bark form or as a liquid extract. At Austin's The Roosevelt Room & The Eleanor, owner/operator Justin Lavenue uses the liquid extract but dilutes it with other ingredients to make it practical for the bar. (Note that they do not use this foamer exclusively - they use... Read more →