Dear Lisa,
The tubers of water chestnuts (Eleocharis dulcis) are often used in Asian cooking and are not considered to be of toxic concern for pets. None of the other ingredients in your husband’s dish are worrisome either, as long as he doesn’t use large quantities of soy sauce, which can be loaded with harmful sodium or MSG.
With that said, it’s still important to note that even non-toxic food that’s not part of your dogs’ normal diet can lead to gastrointestinal upset, and should never become more than an occasional treat in small amounts.