1. Does it contain gluten? - The current version contains gluten. A gluten-free version will be available soon. Stay tuned! 2. Is it suitable for vegetarians? - The mix itself is vegetarian, but we recommend using substitutes like soy milk, vegetable oil, and egg replacers for baking. 3. What is the shelf life? - Unopened, the shelf life is 12 months. For the best taste, please use promptly after opening. 4. What additional ingredients can be added? - You can add chocolate chips, blueberries, nuts, etc., according to personal preference, to enrich the flavor and texture.