"My mom's version tastes better": Immature boyfriend constantly puts down girlfriend's cooking, she refuses to keep cooking for him

For so many people and cultures, cooking is a love language. Take Italians for example, they grow up around the freshest foods, and the most pretentious rules about food and cooking too. Don't cut the spaghetti, chicken doesn't belong with pasta, pizza is eaten with a fork and knife, the list goes on and on. Or the French, with their soups, stews, knife techniques, and bechamel's. Every culture has its do's and don't about cooking. In most cultures, the mothers are the ones who cook. Mothers who become grandmothers, who teach their daughters and granddaughters, and the list goes on and on. 
 

There's a common phrase, "the way to a man's heart is through his stomach," and it's uncanny how true this sentiment is. As outdated as it may seem, it's important to reach people with food. It doesn't have to be fancy, but in the end being able to make a decent meal for someone is an important skillset for anyone.