If you're looking for manga similar to Bambino!, you might like these titles. All recommendations are made by Anime-Planet users like you!
Fundamentally, they're completely different. Bambino focuses on Italian cuisine and delves into a restaurant's inner clockwork, from the main floor servers to the kitchen cooking while Shokugeki no Soma spreads it's wings with Japanese cooking, Italian and about a half dozen other nation cuisines.
Nevertheless, both focus on food and it does that exceptionally well. You can just see the passion pour from the page as meals and prepared foods are presented with gorgeous art and scrumptious descriptions, and some of those descriptions go on for lines, about the food and even some history about the ingredients from time to time. Pretty sure this is research done right.
These two are some real good food manga, character development and comedy occur with some real good bouts of intensity but first and foremost are the chefs and the meals they prepare with the soul within both. Doesn't get much better than these two.