Lemon & chive mayonnaise

• egg yolks↗3
• pinch English mustard↗

  powder

• pinch ground white pepper↗

  or use ground black pepper

• 2 tbsp cider vinegar↗
• groundnut oil250ml ml
• extra-virgin olive oil↗50ml ml
• zest 1 lemon
• 1 bunch chives

  finely chopped

Step-by-step instructions

1. 1

   Mix the egg yolks with the mustard powder, pepper, 1 tbsp cider vinegar and a pinch of salt in a bowl. Mix the oils together in a jug. Use an electric whisk to whisk the yolk mixture, then very slowly, drip-by-drip, add the oil. When the mixture is pale and thicker, and no oil is visible, swap from a drip to a slow, steady stream – whisking all the while.

2. 2

   When all the oil is added and you have a thick mayonnaise, taste and season with more vinegar, salt and pepper. Stir in the lemon zest and chives, then chill until ready to serve.