When you are in Hakodate, you just have to try Shio ramen the city is known for. Shinano is a small brightly lit shop conveniently located just across the station which specialises in the the salt based stock made with chicken and pork bones. Went for the recommended bowl and a serve of gyoza with Sapporo classic. The soup was flavourful and because it was so clear you could see a fair amount of oil on top. Make sure you let it cool because it retains a lot of heat.