Citrus salad with quick red onion pickles, mint and pistachio nuts | Australian Onions

Ingredients

• 4 navel oranges, thinly sliced and skin removed
• ½ fennel bulb, thinly sliced
• Fennel tips
• 1 handful of mint leaves
• ¼ cup pistachio nuts, roughly chopped
• 1 small red onion, thinly sliced
• 1 tbsp sherry vinegar
• ½ tbsp caster sugar
• Juice of 1/2 orange
• ¼ cup parsley, finely chopped
• 1 tbsp sumac