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https://www.instagram.com/reel/C70HyEogAQv/?igsh=MW9hYnI1ZWZjZHRq Ingredients: 4 Large Onions 1/2 cup Extra Virgin Olive Oil 4 Tbsp Butter 3 Egg Yolks 1 cup Water 3/4 cup Grated Parmesan Cheese Salt & Pepper to Taste Cooked Spaghetti Fresh parsley (optional)