DIY database category protein (https://diy.soylent.com/ingredients?c=protein) could have more entries. For example this one (https://www.amazon.com/PlantFusion-Complete-Protein-Vanilla-Servings/dp/B0021FEMZG) is vegan and claims to be “complete” and might be a useful alternative to the Whey, Soy, etc. proteins now in the category. Is there a way (other than this) to suggest or add items to the database so they can be easily pulled into a recipe?
No idea. You can easily add a custom ingredient to a specific recipe, and export it to other recipes – that’s how I handle all of my custom ingredients.