For traditional baking About Fleischmann's® traditional yeast - The original dry yeast. - Highly stable and valued for its reliable performance. - Simply dissolve in warm liquid (100°F/38°C), then follow your recipe. - Not recommended for recipes that call for instant or quick-rise yeast. Important tips - keep your yeast alive - Did you know yeast is a living organism? - Liquids that are too hot can kill your yeast. - To keep your yeast alive, any liquid ingredients added to your recipe should be warm (100°F/38°C).