Gustatory: relating to or associated with eating or the sense of taste
That would be the word to go along with "visually" in describing food. Mom was saying something about if she uses beige plates, she'll have to cook food that's more exciting, and Dad wanted to know if she meant visually more exciting, or...that it would taste exciting. And we couldn't come up with the word that corresponded with the sense of taste. But we looked it up, and the word is "gustatory".
The only one we could come up with at first was olfactory, but that's smelling.