Spring Onion Fritters & Broad Bean Leaf Tips with Lemon Mayo

Ingredients

• 8 bulbous spring onions (salad onions), stems trimmed to 3cm from top of bulb
• 12 broad bean leaf tips (see note)
• For deep-frying: vegetable oil
• To serve: lemon wedges
• Preserved-lemon mayonnaise
• 2 egg yolks
• 1/3 preserved lemon, rinsed, flesh and pith discarded, rind coarsely chopped
• 250 ml (1 cup) olive oil
• To taste: lemon juice
• To serve: smoked paprika
• Tempura batter
• 200 gm (1 1/3 cups) plain flour
• 60 gm cornflour
• 1 egg
• 500 ml (2 cups) chilled sparkling water