Method

Allow all liquids to come to room temperature.

The best & easiest way to make this is to add all the ingredients into a tall jar big enough to get a stick/hand into or blender cup, then blitz up & down until it has all emulsifies, if not, then you can use a food processor or a whisk, add Aquafaba, syrup, mustard, salt & vinegar turn on or whisk & slowly add oil until used up.

Keep in the fridge covered, use within a week max.