Yeast allergy can cause everything from gastrointestinal problems to skin rash. Severe anaphylaxis is also a possibility. So, those with a diagnosed yeast allergy must avoid bread, cake, alcoholic beverages, nutritional yeast, and spreads like Marmite or Vegemite.Thankfully, there are alternatives to yeast-risen breads. “Quick” breads made with baking soda or baking powder (or both) are easy to make. Flatbreads, tortillas, and crackers are made without yeast. But in all cases, you should check the ingredient listing on the package to be sure it’s safe for your diet.Get to know Andrea Boudewijn, our cooking and baking expert.