Potted prawns with pickled zucchini

Ingredients

• Pickled zucchini
• 500 grams green zucchini, sliced thinly
• 1 tablespoon salt
• 1 (100g) small red onion, sliced thinly
• 1 fresh long red chilli, seeded, chopped finely
• 5 sprigs fresh dill
• 1/2 cup (125ml) white wine vinegar
• 1/2 cup (125ml) white balsamic vinegar
• 3/4 cup (75g) white sugar
• 1 teaspoon mustard seeds
• Potted prawns
• 1 kilogram uncooked medium prawns
• 100 grams butter
• 2 tablespoons brandy
• 2 teaspoons finely chopped tarragon leaves
• 1 small_piece (100g) red onion, sliced thinly
• 1 small clove garlic, crushed
• 1 teaspoon grated lemon rind
• 1/4 cup (60ml) extra virgin olive oil
• 4 small_piece (150g) brioche rolls, sliced thinly