How to Make Savory Crepes with Mornay Sauce - Escoffier

Ingredients

• 1 ½ cups All Purpose Flour
• 2 each Eggs, beaten
• ¼ tsp Kosher Salt
• 2 cups Milk
• 6 oz Ham
• 1 each Yellow Onion
• 1 each Russet Potato
• 2 TBSP Olive Oil
• 2 each Green Onions, chopped
• 2 oz Butter, unsalted
• 2 oz All-Purpose Flour
• 1 quart Whole Milk
• 4 oz Gruyere Cheese, shredded
• 1 tsp Kosher Salt
• ¼ tsp White Pepper, ground