Lisa Kitahara, a Japanese Canadian recipe developer, has gained widespread attention for her creation of a simple yet visually striking deep-fried egg dish known as egg katsu. The dish, which features eggs coated in panko breadcrumbs and fried until golden, has rapidly gone viral on social media platforms, with close to 10 million views on Instagram and an additional 4 million on TikTok.

Ms. Kitahara described herself as a fan of crispy textures and eggs, but initially doubted the recipe would become popular due to its simplicity. The egg katsu involves only two main ingredients—eggs and panko breadcrumbs—along with cooking oil. Despite its straightforward preparation, the dish stands out for the combination of a crunchy exterior and a soft interior with a runny yolk, elements that have helped fuel its online appeal.

While Ms. Kitahara developed the recipe independently, the concept of frying eggs in a katsu-style breadcrumb coating is not entirely new. In 2013, a similar idea gained recognition during a recipe contest sponsored by the Japan Poultry Association and the Japanese Egg Industry Association. Kaori Kosugi from Hokkaido received the grand prize for her "Egg Fry," which involved frying a raw egg coated in panko and serving it with baby greens and soy sauce. The texture contrast—crispy outside, tender whites, and molten yolk—is key to the dish's popularity, distinguishing it from similar dishes like Scotch eggs.

The term "katsu" traditionally refers to breaded and fried items such as tonkatsu, a breaded pork cutlet. Variations include shrimp, oysters, and squid, as well as gyukatsu, which uses steak flash-fried to maintain a rare center. Even vegetables like tomatoes have been prepared using this technique.

Tokyo-based food writer Yukari Sakamoto, who leads market tours and contributes to culinary writing, noted that deep-frying dishes like this is generally uncommon in Japanese home cooking due to the convenience of dining out for such items. She also mentioned that egg katsu is rarely seen on restaurant menus because of the delicate handling required to maintain the yolk's integrity during frying, which makes the dish particularly suited for home cooks.

Ms. Kitahara has experimented with serving egg katsu in various ways, including as a topping for eggs Benedict, garlic noodles, Japanese curry, and even mapo tofu, underscoring the dish's versatility. Its combination of simplicity, texture, and visual appeal has made egg katsu a standout trend in contemporary home cooking.