In a medium bowl, whisk together eggs, egg whites, sugar, vanilla and salt.
Mix in flour until full incorporated.
Stir in melted butter and milk. Mix until smooth.
Warm Waffle Cone Maker to medium heat.
Once warm, place one heaping tablespoon of dough in the center.
Close the top and bake for 2 minutes
Use a tong to take flat waffle off the heat.
Place it onto parchment paper and place a mason jar top in the middle. Lay the jar top to one side.
Use the tong to fold the waffle over onto the mason jar top to form a taco. Use tongs to gently squeeze them together. Hold for 1 minute and then set aside to cool.