Donburi Research Society (丼物研究会 Donmono kenkyū kai) or Don RS in short, is one of the school clubs within the Tōtsuki Culinary Academy which specializes on researching Donburi dishes. Originally planned for demolition, this club has preserved its grounds thanks to Sōma Yukihira's Shokugeki victory over Ikumi Mito. It was forced to shut down once again after Central was founded, but this decision was eventually overruled through a Shokugeki.
A club rich with Donburi recipes, Don RS provides anyone who has an interest in Donburi dishes and specializes on researching Donburi. The Don RS was targeted by Erina Nakiri for her "Cooking Lab Extension" project, causing Kanichi to become the sole member. Sōma Yukihira defeated Ikumi Mito in a Shokugeki, allowing the club to remain intact. Ikumi joined the club following the Shokugeki, and during the Moon Banquet Festival, it was revealed that the Don RS received new members. After the first day of the festival, the club was ranked third place in the Main Street Area. When Azami Nakiri became director of Tōtsuki, he disbanded all Research Societies and Seminars on campus, including the Don RS. This decision was revoked when Ikumi defeated Central in a Shokugeki.
Beef Cutlet Don - The first of Soma's practice dishes for his Shokugeki against Ikumi. A typical Katsudon with the pork subbed for beef. He added a mixture of chicken and quail eggs at the end to give it a richer taste.
Sukiyaki Don - Soma's second practice dish. Soma made the dish with sugar and beef fat, and finished it up with a chicken egg. He made it this way to add fat to the dish, after he learned that Ikumi's dishes always hit with a bunch.
Hamburger Steak Don - Another one of Soma's practice dishes. Like the rest, it was rejected after Kanichi tasted it.
Gyūdon - Another one of Soma's practice dishes. Like the rest, it was rejected after Kanichi tasted it.
Rare Beef Don - Another one of Soma's practice dishes. Like the rest, it was rejected after Kanichi tasted it.
Chaliapin Steak Don (Prototype) - Sōma Yukihira's prototype donburi dish for his Shokugekiagainst Ikumi Mito. Normally done by covering the steak with lots of minced onions and then removing them and cooking the same onions in the steak's meat juices after it was pan fried and seasoned, Sōma would spend the night before the match, perfecting the recipe.
Chaliapin Steak Don - Sōma's dish against Ikumi in his first yet high stake Shokugeki. Combined with the legendary Chaliapin Steak and the donburi style, it is a one of a kind. It was creatively cooked with pickled plum which served as an accent to the rice while red wine was used to deglaze and cook the onions and thickened to serve as an appetizing sauce to the steak don. It is a don that would make you want to eat more!
Petit Size Loco Moco Don - Ikumi's dish choice for the 200 Egg Breakfast Buffet Challenge. A variation of the Hawaiian local classic meal, Ikumi substituted standard brown gravy with vinaigrette and arranged it as a don dish. It's hearty and brimming with energy!
Dongpo Pork Curry Don - Ikumi's latest donburi dish based after the famed Chinese delicacy of Hangzhou, China. While the meat is bouncy and juicy, the secret of the dish laid within Ikumi's self made tanjouyu oil to ensure the balance of taste between spiciness and sweet flavor within the donburi as well as the use of chinese spices that fits the pork meat. This is also Ikumi's first non-A5 Meat dish. Ikumi has shown that she has learned to create a true donburi dish, making a dish that encourages the eater to eat everything in it.
The president of Don RS. He was the sole member of the club before the restoration. After Sōma's first Shokugeki victory, Kanichi decided Sōma would be the next president, but Sōma declined. He would later offer the same position to Ikumi, much to her annoyance.
Sōma came to the Don RS to research Donburi dishes. When Ikumi came to the club to demolish it under Erina's name, Sōma challenged her to a Shokugeki to keep the club alive. Sōma created the Chaliapin Steak Don, which eventually won the Shokugeki against Ikumi. He later refused the offer to join the Don RS and become the next president.
Megumi came to the Don RS with Sōma to help him find a club. She assisted Sōma in preparation for his Shokugeki. Megumi was not offered to join the club nor did she have the intention to do so as she was already a member of another club.