This recipe originally appeared on the Rachael Ray Show. For more recipes and videos from the show visit RachaelRayShow.com .
- 2 large organic egg yolks
- Zest of 1 lemon plus 2 tablespoons lemon juice
- 2 teaspoons Dijon mustard
- 1 cup grapeseed oil
Place egg yolks in a mixing bowl  with the lemon zest and juice, and Dijon mustard. While whisking, slowly stream in the grapeseed oil until emulsified.