Waltraud Unger is a certified integrative nutrition health coach, certified herbalist, and former research physicist. Growing up in Germany, she missed the quality sourdough bread of her childhood after switching to a gluten-free diet, so she set out to recreate it herself.

After years of refining her process, other bakers began asking her to teach them what she had learned. She created The GF Sourdough Lab to give gluten-free bakers a place to learn, troubleshoot, and support each other as they master sourdough and beyond.