Cooking Unit's Challenge! New Children's Lunch (料理部チャレンジ！新お子様ランチ Ryōri-bu charenji! Shin okosama ranchi) is part one of episode 25 of GO-GO Tamagotchi!. Along with part two, it is episode 246 overall. It first aired on September 25, 2014.
The cooking class is preparing a new menu for DoriTama School. However, all of the cooks are bored with the recipes they have on hand. Grilltchi-Sensei mentions that a nearby restaurant wants a new children's lunch for their menu. Kuchipatchi and his classmates volunteer to design the new children's lunch and improve their cooking skills. They start experimenting in the kitchen and come up with some new recipes. Mametchi, Memetchi, and Meloditchi will be the taste-testers for the new cuisine.
- This episode contains a variation of the song "Powerful Beat". The melody is the same, but the lyrics are changed to be about cooking.
- A "children's lunch" is a special kind of meal in Japan. It is somewhat similar to the western concept of "kids' meals", since it is made specifically for children.