Deli Sandwich or Pizza?
Now, doesn't that look like it should be on top of a pizza?
Into the Oven
We suggest you cook your pie at the highest temperature your oven can reach. If you're using a pizza stone, you'll want it to be in the oven during the pre-heat. Cook the pizza until the crust is crisp and the cheese has melted.
Dijon Mustard Oil
To make the mustard oil—which is closer to a creamy mustard sauce than an oil—you'll need a whisk, blender, or food processor. Blend or whisk 1 part extra virgin olive oil with 3 parts dijon mustard.
At L'Asso, they sometimes use c to thicken the sauce and prevent oil separation, but you really don't have to get that fancy unless you happen to have a big bag of xanthan gum lying around.