Jessica Seinfeld Announces A New Flexitarian Cookbook That Will Include Jerry’s Favorite Recipes Delish 3 hrs ago UP NEXT Jessica Seinfeld is releasing her fifth cookbook in the fall and it features some of her family's favorite recipes, including Jerry Seinfeld's go-to dinner. Vegan, At Times is a collection of plant-based meals that reflect the Seinfeld's family switch toward a more flexitarian diet. In an exclusive report by PEOPLE, Jessica said that while her family isn't necessarily full of dedicated vegans, they do tend to eat plant-based pretty often compared to before. "Humans love variety," she said. "Sometimes we eat healthy and sometimes we don't. If you can eat vegan food a few days a week, you will feel better, have more energy, do good for animals and the planet."