What products in a cake can a celiac not eat and what can they be replaced with?

A person with celiac disease cannot consume products containing gluten, which is found in wheat, barley, and rye. Common cake ingredients to avoid include all-purpose flour, bread flour, and any baking mixes containing gluten. These can be replaced with gluten-free alternatives such as almond flour, coconut flour, or gluten-free all-purpose flour blends. Additionally, ensure that other ingredients like baking powder and flavorings are gluten-free to avoid cross-contamination.