We are one of only eight restaurants in the UK licensed to serve certified Kobe beef. This exclusive beef comes from Tajima Japanese Black cattle raised in Hyogo, Japan. Only around 3,000 cattle qualify each year, and most of the supply never leaves Japan. To earn the Kobe certification, every cut must meet strict standards. The cattle are fed a controlled diet of dried grasses along with soybean, corn and barley. They are slaughtered between 3 and 5 years of age and must achieve exceptional marbling with a meat quality score of 4 or 5. These criteria ensure the signature flavour, tenderness and richness that Kobe beef is known for. Our Kobe sirloin steak is prepared using a traditional Japanese method called Ishiyaki. We cook it on a volcanic stone heated to 400 degrees Celsius, which enhances the natural taste and gives a unique dining experience.

Koshihikari is widely regarded as the finest sushi rice in the world. First cultivated in 1956 by combining two superior short-grain varieties, it was developed to hold moisture longer, making it ideal for perfect sushi shaping. Known for its distinctive texture, gentle fragrance, and natural sweetness, Koshihikari delivers exceptional consistency in every bite. At RAI Restaurant, we source our Koshihikari directly from Niigata, Japan renowned for producing the highest-quality rice and use it across our sushi and maki rolls to ensure authentic flavour and impeccable craftsmanship.

Wasabia Japonica, commonly known as fresh wasabi—has been an essential ingredient in Japanese cuisine since the 10th century. Unlike the harsh, artificial pastes widely found elsewhere, true fresh wasabi offers a clean, aromatic heat with gentle spice and a naturally herbal flavour. Because the plant is notoriously difficult to cultivate, thriving only in Japan’s cool, fast-flowing mountain streams, we source our wasabi directly from specialist growers in these regions. At RAI, we grate fresh wasabi at the table using a traditional sharkskin oroshi grater to release its delicate aroma and peak flavour, enhancing every sushi and omakase course with authentic Japanese nuance.