Blue-Sabi Sauce - cooking recipe

Ingredients

2 1/4 cups whole milk
2 tablespoons unsalted butter
1 small Spanish onion, finely chopped
2 tablespoons all-purpose flour
1/4 teaspoon kosher salt
1 pinch cayenne pepper
1/2 lb crumbled blue cheese
1 1/2 tablespoons wasabi paste

Preparation

Place the milk in a small saucepan and bring to a simmer over low heat.
Heat the butter in a medium saucepan over medium heat.
Add the onion and cook until soft.
Stir in the flour and cook for 1 minute.
Slowly whisk in the warm milk, and continue whisking until thickened.
Season with salt, cayenne pepper, Wasabi paste and the cheese.
Continue cooking for 5 minutes, whisking occasionally.
If the sauce is too thick, thin it with a little extra milk.
Pour mixture into food processor and blend until smooth.
Serve sauce warm.