Tarragon & mustard mayonnaise

• egg yolk↗1
• Dijon mustard↗1 tbsp tbsp
• olive oil↗150ml ml

  (not extra virgin)

• squeeze lemon juice
• ½ small bunch tarragon

  chopped

Step-by-step instructions

1. 1

   Put the egg yolk and mustard in a bowl. With a hand whisk, keep whisking the mixture while gradually adding the olive oil. When all of the oil has been added, season to taste with the lemon juice and stir in the tarragon.