Taste the dip. The soup mix is usually salty enough on its own, so avoid adding extra salt at this stage. If you prefer a slightly looser dip, you can thin it with a tablespoon or two of milk or cream, stirring well after each addition until you reach your desired consistency.
Transfer the dip to a clear glass serving bowl so you can see the thick, creamy texture and the onion flecks through the sides. Smooth the top with the back of a spoon for a neat