Continue adding safflower and olive oils, increasing the amount as you go, until you have a smooth emulsion.

Meanwhile, combine the mustard, vinegar and oils to make a smooth emulsion.

Mix dressing ingredients to a smooth emulsion.

Continue to blend to form a smooth emulsion.

A tablespoon at a time, mix in wine vinegar to make a smooth emulsion.

Mix until you have a smooth emulsion.

Mix well, then whisk in the olive oil until there is a smooth emulsion.

Beat in the oil to make a smooth emulsion.

It is a bit like making mayonnaise and you should soon have a perfectly smooth emulsion.

Gradually add the olive oil to make a smooth emulsion.