Well, it seems the recipe app of the future is here, and it's chatgpt / chatgpt-based apps.
You can give it any prompt and it gives you exactly what you asked for. Prompt by ingredients, lack of ingredients, cuisine type, allergies .. whatever, and it gives you a nicely formatted recipe, with an image, step by step instructions.
The only thing that is missing is video.
This is what any nostr recipe app has to compete with.
One option is to have AI-generated recipes, and user-submitted recipes side by side. You can browse existing recipes, or prompt it for more advanced functionality.
Anything less than this is not a recipe app of the future.