Celeriac remoulade (Thermomix® Cutter)

• 500 g celeriac, cut in pieces, to fit through feeder tube

Mayonnaise

• 120 g grapeseed oil
• 1 egg yolk
• 1 tsp mustard
• 1 - 2 pinches sea salt, to taste
• 1 - 2 pinches ground black pepper, to taste
• 15 g red wine vinegar