Bloody mary mussels

Name: Bloody mary mussels
Ingredients: 1 tbsp olive oil; 2 celery sticks, finely chopped; 1 red chilli, finely chopped; 1 onion, finely chopped; 1 lemon, zest peeled into strips, juiced; 75ml vodka; 250ml tomato juice; 5g dashi powder (see tip, below); ½ tsp celery salt; 2 tsp Worcestershire sauce; a few dashes of hot sauce; 1tsp sherry vinegar; ground white pepper, for seasoning; 2kg mussels, debearded and cleaned; small handful of parsley, finely chopped; garlic bread or fries, to serve