Plump mussels steamed open in a quick broth of butter, onion, celery, tomato and lager. A 25-minute bistro classic — don't forget crusty bread for the broth.
Melt the butter in a large stockpot over medium heat. Add the onion and celery; cook until soft, about 4 minutes. Add the garlic and cook 1 minute more.
Stir in the tomato and Stella Artois, then add the mussels. Cover the pot and cook about 6 minutes, stirring occasionally, until the mussel shells open (discard any that don't). Stir in the parsley and ladle into bowls.
Notes
Discard duds: Toss any mussels that stay shut after cooking, and any that won't close before cooking.Pick your beer: A light lager like Stella keeps it crisp; a wheat beer adds more body.Serve with bread: Crusty bread or frites are a must for soaking up the broth.Don't overcook: Six minutes until they just open keeps the mussels plump and tender.