Preheat your oven to 375 degrees.
Separate the shrimp from their tails and shells. Put the peeled shrimp on a large sheet pan and toss them with 1 tbsp olive oil, 5 cracks of black pepper, and 1/4 tsp kosher salt. Set the pan aside
Heat 3 C of stock in a medium saucepan, once it comes to a boil, whisk in the grits. Turn the heat down to low and continue to whisk occasionally.
Allow the grits to cook and thicken about five minutes. Add in the butter, salt, red pepper flakes and half and half. Whisk until the butter is melted and everything is incorporated. Pull off the heat oce thickened and cover the pot with a lid to keep warm while you cook the remaining ingredients.
In a large skillet or saute pan heat 1 tbsp olive oil over medium heat. Once shimmering and hot add in the shrimp shells and tails. Allow them to brown stirring occasionally. Once the majority of the shells are white you know they are mostly browned. About 5-7 minutes
To the shells add in the clove of garlic and cook for thirty seconds. Then add in the white wine, water and the lemon juice. Bring to a simmer and allow this to cook until the liquid is reduced. About 15 minutes.
Once the liquid is reduced and thick, strain the liquid through a strainer into a bowl. Add the liquid back to the pan and add in 2 tbsp unsalted butter. Whisk until incorporated and keep warm on low heat until the rest of the ingredients are warm.
Put the shrimp in the oven and cook until they are all pink and no longer opaque. Usually ten minutes.
While the shrimp are cooking get started on the toppings. In a large skillet over medium heat add in the bacon and cook until browned. Drain the bacon on a paper towel lined plate. Add in the mushrooms and green onions. Cook about two minutes and then set aside with the bacon.
Spoon 1/4 of the grits into a bowl, top with 1/4 of the bacon and mushroom mixture. Put an equal amount of shrimp into each bowl and spoon some of the sauce over the top of everything. Serve warm. Makes four hearty servings. Serve with some delicious white wine such as a Sauvignon Blanc.