Update: the situation should now be improved; some recipe content has been re-indexed, and an ingredient parsing problem was discovered and fixed too.
There are still only three recipes that contain both tuna and teriyaki sauce appearing, so coverage could likely be improved further. But it's a start, I hope!
(I've added some debug SQL and output to the issue in case you're curious)
Substitutions (i.e. 'ingredient x OR ingredient y satisfy my constraints') are planned. I'm yet to fully spec the feature out and consider all the use cases, so I'll make sure that's one of them.
[1] - https://github.com/openculinary/knowledge-graph