When I visit my folks, I do all the cooking while I'm there. My rules are: (1) I don't make anything from a "box" (that's what my dad cooks), (2) I don't cook anything that my dad can cook (limited), and (3) I don't serve pasta more than twice during a visit (they eat a lot of pasta and I'm usually there 6-8 weeks). What I've been doing the last couple of times I visited was go through my mother's recipes and make things she used to cook (frosted chocolate cookies, crab marinara, linguini with clam sauce, etc.). My mother has dementia, but she definitely remembered the chocolate cookies (her mother used to make them all the time and the things I baked/made. They seem to enjoy that. Unfortunately, it takes my mom about 2 weeks to stop complaining that she doesn't like my dad's cooking after I've been for a visit.