Ingredients
The following ingredients have 4 Servings
- 1 tablespoon unsalted butter
- 1 tablespoon all-purpose flour
- ½ cup plus 2 tablespoons whole milk
- ½ teaspoon dry mustard
- ½ teaspoon ground ginger
- ⅓ cup shredded gruyere cheese
- 3 tablespoons grated Parmesan cheese
- Salt and cracked black pepper to taste
- 3 slices sourdough bread, lightly buttered and toasted
- 3 tablespoons whole grain prepared mustard
- 6 ounces smoked ham, thinly sliced
- 3 large egg yolks
