Aroon Rai is, like many local restaurants in Chiang Mai, large and open-air, serving all kinds of curries, noodles and soups as well as frog, local sausage, and sticky rice (perfect to go with your curry!). It's very cheap and food and drinks for two cost us about €9.00. As this city is very popular with tourists, it's not uncommon to see curious tourists digging in with the locals. I especially recommend the Soi Khoa noodles with chicken curry. Very tasty and spicy.