Nordic Shrimp Rolls

Ingredients

• 1/4 cup (60 ml) mayonnaise
• 1 tbsp dill, finely chopped
• 1 lemon, zest finely grated
• 2 tsp (10 ml) lemon juice
• 1/4 cup (60 ml) sour cream
• 1 tbsp (15 ml) olive oil
• 1 tbsp (15 ml) whole-grain mustard
• 1 tbsp parsley, finely chopped
• 2 tsp (10 ml) lemon juice
• 1 green onion, chopped
• 1 lb (450 g) Nordic shrimp, fresh or frozen and thawed, peeled and patted very dry
• 1 1/4 cups (145 g) celeriac, julienned on a mandoline or grated
• 1/2 green apple, julienned on a mandoline or grated
• Tabasco-style sauce, to taste
• 4 brioche hot dog buns
• 8 Boston lettuce leaves
• 1 Lebanese cucumber, sliced into thin rounds on a mandoline
• 1 radish, sliced into thin rounds on a mandoline
• 3 tbsp fresh samphire (see note)
• Dill fronds, to taste