Wash the fresh spinach thoroughly to remove any dirt.
In a large pot, bring water to a boil and add the spinach.
Blanch the spinach for 2-3 minutes until wilted.
Drain the spinach and rinse with cold water to stop cooking.
Squeeze out excess moisture from the spinach and chop finely.
In a skillet, melt the butter over medium heat.
Add the minced garlic and sauté until fragrant.
Stir in the heavy cream and bring to a gentle simmer.
Add the chopped spinach and mix well.
Stir in the Parmesan cheese, salt, pepper, and nutmeg, cooking until thickened.