Celeriac rémoulade

Name: Celeriac rémoulade
Ingredients: 1 celeriac, peeled, cut into matchsticks; 120 ml good quality mayonnaise; 2 tbsp mixed chopped fresh herbs; ½ tsp Dijon mustard; ⅛ tsp anchovy essence (optional); salt and freshly ground black pepper; salt and freshly ground black pepper