To a bowl, prepare an ice bath by adding 10 or so ice cubes and adding a few splashes of water. Set a slightly smaller bowl inside the bigger bowl and set a sieve or strain inside the smaller bowl. Set the whole ice bath contraption aside.
To a medium saucepan, add the heavy cream and sugar; heat over medium until the cream reaches a slight simmer. Once it reaches a simmer, remove from heat.
In a medium mixing bowl, beat the egg yolks together, thoroughly. Next you're going to temper the cream mixture. Whisking the entire time, add about 1/4 cup of warm cream to the egg yolks. Add the remainder of the cream to the egg yolk mixture and whisk. Return the entire mixture back to the medium saucepan and place over low heat. Cook the milk and yolk mixture, stirring constantly, until the thermometer reads 170 to 175 degrees F and the mixture appears thick and coats the back of the spoon.
Pour the mixture through the sieve into the bowl. Lastly, stir in the buttermilk. Keep mixing until the mixture is room temperature. Wrap the bowl in plastic and transfer it to the fridge for 4-5 hours, or overnight, until very cold.
While the ice cream is chilling in the fridge, let's make the candied pink peppercorns and strawberry swirl! Add two tablespoons of sugar to a small bowl. Place a small saucepan over medium heat. Add the remaining 3/4 cup sugar and water and mix until dissolved. When the sugar is dissolved, add the peppercorns and cook for 1 minute. Using a slotted spoon, remove the peppercorns from the syrup and add them to the small bowl of sugar, tossing and coating them evenly. Transfer the peppercorns and place them on a sheet of wax paper or parchment, being sure none of touching. Set aside.
To make the strawberry swirl, add strawberries to a food processor and pulse until pureed. Set a medium skillet over medium-low heat and add the strawberries, sugar and pinch of salt. Cook for about 5-7 minutes, and until reduced by about half. You should end up with a little over 1/2 cup strawberry concentrate. Place in the refrigerator until you're ready to use.
Churn the mixture into the bowl of your ice cream maker, according to your ice cream maker's instructions. When the ice cream is done churning, transfer one third of the ice-cream to a container and drizzle about one third of the strawberry swirl over it. Repeat the process, layering with the remaining ice cream and strawberry swirl. Top with the pink peppercorns. Freeze the ice cream until hard, about 8 hours or so.