For ultra-smooth pudding, I like to whisk the mixture constantly while cooking and then strain it through a fine-mesh sieve before chilling. Works like a charm!
Hi. I like to put the pudding mix in the bowl first and add the milk a little at a time, stirring or beating well after each addition, until you have smooth emulsion. Once the pudding mixture is smooth, add the rest of the milk and beat with your whisk as usual. Of course an electric mixer will help smooth it out as well.