Spoonacular

The Spoonacular API is a powerful RESTful service: access over 380,000 recipes, 86,000 food products, and a complex food ontology for semantic search.

Spoonacular delivers a comprehensive food management API: it’s the backend for culinary applications, food trackers, and e-commerce recipe features. Developers gain access to a database of over 380,000 recipes and 86,000 food products, all accessible via a required API key. The system uses a complex food ontology to power intelligent features: semantic search handles natural language queries (e.g., 'gluten free brownies without sugar'), and proprietary algorithms automatically calculate nutritional information. Key endpoints support complex search by ingredients or nutrients, analyze recipe instructions into atomic steps, and even convert amounts (e.g., '2 cups of flour to grams'). This is a complete, well-documented solution for food data integration.

https://spoonacular.com/food-api