We're sorry that you're not finding what you're looking for. Our database has a whopping 500+ food ingredients, but we know that's not the entirety of all foods out there.
Currently it's not possible to add a food to your profile that's not already in the database. We're continually working on expanding our food lists so you don't run into the problem again. Also, we're exploring possible new features to allow you to add a custom food entry, so keep your eyes out for that.
In the meantime, if the food you have in mind is made of food ingredients listed on Selectivor (for example, mayonnaise made from canola oil and egg yolk), you can search the basic ingredients and get the final designation of that food.
Please let us know what foods you're interested in that we don't yet include so we can add that if possible.
We hope this helps!
Oliver @ SelectivorSelectivor is how we eat together.