Lesaffre Yeast - Commercial Baking Yeast & Ingredients - Commercial Bakers Lesaffre helps commercial baking get quickly from line to shelf, partnering with you from start to finish on ingredients, formulation, new product ideation, production solutions, and more. Lesaffre is Since 1853, Lesaffre and Red Star have used their passion and expertise to bring superior yeast & ingredients to the baking industry.