Start by putting a pot of water on the stove over medium heat. Then in a small sauce pan add the the scallions, 3 cloves of crushed garlic and the cream and cook until the shallots and garlic soften up. Make sure to not boil the cream. Set aside.
In a shallow pot, add the butter, once melted add the 3 halved garlic cloves and the peas and cook them until the peas are soft. Add salt. Remove the garlic.
In a blender place the scallion, garlic and cream and add 4 tablespoons of peas, blend until smooth.
When the water boil add the coarse salt and then add the garganelli, they will cook in 2-3 minutes. Transfer them with a spider on the pot where you have the peas. Add the cream sauce and some pasta some pasta cooking water, mix well.
Sprinkle with mint and lemon zest, plate and sprinkle with more mint, black pepper and some Parmigiano.