Melt the butter in a 4 1/2--quart pan over low heat. Add the onion, celery, garlic, thyme and mushrooms, then saute till onions are translucent, about 5 minutes, stirring often.

From their wagyu ramen, loaded up with 100g of 7-9 score wagyu, thick noodles, black fungi and beetroot chips to their clear lemon and chicken ramen and everything in between, there’s more than ...