01 -
In a medium bowl, whisk together the anchovy paste and minced garlic until well combined. This takes about a minute, and the smell at this point is amazing!
02 -
Add the lemon juice and Dijon mustard, whisking until smooth and well combined. Make sure the lemon juice is fully incorporated, otherwise you'll get pockets of sourness!
03 -
With the whisk constantly moving, slowly drizzle in the olive oil. This is key for a nice emulsion. It takes a little patience, but trust me, it's worth it!
04 -
Add the egg yolk and whisk until everything is fully emulsified and thick. If it's too thick, add a tiny bit of water to thin it out.
05 -
Stir in the grated Parmesan cheese until well combined. Taste and adjust salt and pepper.
06 -
Add the Worcestershire sauce and taste again, adding more salt and pepper as needed. You're ready to go! It should be creamy, tangy, and delicious!