Step 2: Get in the mix...

Picture of Get in the mix...
Drop the egg yolk in your mixing bowl.

Put a squirt of mustard in there.

Squeeze a bit of lemon juice in there also.

You can add some salt and pepper too.

Add a bit of oil.

Start to whisk together.  The mix should start clouding up and you should see it get a bit thicker or lumpier.  This is the start of the emulsification process.

Add more oil as you whisk.  Get it to a consistency of a runny mayo.