Place a jug on top of the Thermomix and weigh in the oil. Set aside.

Place vinegar, mustard, egg, syrup and seasoning into Thermomix bowl with MC in.

Set to 4 mins/37/speed 4.

After 3 minutes, begin pouring the oil onto the lid in a steady stream, allowing it to drip through the MC into the bowl. This should take up the final minute.

Scrape down and test for seasoning.

Pour into a sterilised jar.

Keep in the fridge.