Peel the garlic, chop it roughly and place it in a tall, narrow container. Add milk, mustard, salt and lemon juice and whip with a hand blender until creamy and frothy. Then - as with the preparation with egg - with the mixer stick running continuously, gradually pour in the oil in a small stream. When mixing, always move the stick up and down very slowly. This continues until the oil is used up and is no longer visible. Then season with a pinch of sugar and white pepper, add a little salt if necessary and beat for another 1 - 2 minutes.