Wakayama Pref. boasts the largest production of mandarin oranges in Japan. Among them, Arida City, which has a history and tradition of over 400 years, is nationally famous for its sweet and delicious “Arida mandarin oranges”.

Souwa Orchard is a company established by local mandarin orange farmers in 2000, and it is dedicated to all aspects of mandarin orange production, from cultivation (primary industry) to processing (secondary industry) and sales (tertiary industry), known as the "6th industry of mandarin oranges." While taking on the challenge of cultivating fully ripe mandarin oranges, they meticulously hand-peel and strain the oranges during processing, and carefully extract the pulp. One of their flagship products, mandarin orange ponzu "Mikapon," is made by combining 100% mandarin orange juice with citrus fruit juices such as yuzu, tangerine, and kumquat, and then gently finishing it with soy sauce from Shodo Island and local vinegar. It is free from animal-derived ingredients and can be widely used as a sauce for salads, carpaccio, grilled meat, dumplings, and takoyaki. The company's headquarters also houses a directly managed store where customers can enjoy shopping while receiving advice from staff and sampling the products.

The mandarin orange cultivation in the Arida region is a traditional agriculture that has been passed down for over 400 years in a natural environment with many mountain forests and few harvests from flat fields. It is considered one of Japan's agricultural heritages. The terraced mandarin orange fields along the Arida River, especially those near the summit of Yamadahara, provide a picturesque view during the harvest season when the mountains turn orange and offer a splendid panoramic view of the Arida River estuary and Arida City.

"Ito Farm", a specialty store in Arida City, Wakayama Prefecture, offers Arida mandarin oranges and citrus products. Established in the mid-Meiji era, it is a historic farm with a name that was affectionately known as "Funabayashi," originating from the captain of a mandarin orange transport ship. Starting as a mandarin orange wholesaler, it now collaborates with contract farmers to produce high-quality mandarin oranges and citrus fruits, as well as processed products. Their pride, including "100% pure juice," jellies, marmalades, and jams, is made with love, while also focusing on new initiatives while preserving tradition. The direct shop "Mikan no Ki" is a unique old folk house shop created by renovating a mandarin warehouse. Inside, you'll find Ito Farm's additive-free juices and processed products, as well as seasonal fresh citrus fruits. The most popular juice includes a variety of citrus fruits such as Wenzhou mandarin oranges, ponkan, Kiyomi, iyokan, and hassaku. Additionally, they hold seasonal events such as glamping in the mandarin orange orchard.