Jalapeno Mashed Potatoes

Name: Jalapeno Mashed Potatoes
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: American
Ingredients: 3 pounds Russet potatoes, (peeled and cut into ½-inch cubes); 4 teaspoons salt, (divided); 1-2 jalapeño peppers, (seeded and roughly, finely diced); 3 garlic cloves, (minced); 1 stick unsalted butter, (room temperature); ½ cup heavy cream or buttermilk; 2 teaspoons black pepper