As you may already know, Sapporo is known for their miso ramen. And miso ramen may as well be synonymous with Sumire. If you're in the vicinity, then the Sumire Honten (headquarters) is a MUST visit. Don't care much for miso? Then get ready to be blown away! You WILL burn your tongue and you WILL like it. The thin layer of oil keeps everything scorching hot and the tantalizingly tangy miso is unbelievable.
The closest station is Nakanoshima on the Namboku Subway Line. From there take Nakanoshima Street south and follow the bend to the left until you hit the next main street. Cross it, make a left then follow it until you see a small road that goes down parallel to the main street. Sumire will be at the end. There's plenty of parking and plenty of seats. They open at 11am and close at 9pm.
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