Absolute Best Mashed Potatoes

Ingredients (7)

• + 1 cup water add to pantry
• + 6 large firm russet potatoes, scrubbed add to pantry
• + 1 pint heavy cream at room temperature add to pantry
• + ½ cup unsalted butter at room temperature add to pantry
• ✓ 2 tablespoons dry instant mashed potato flakes, or as needed
• + salt and ground white pepper to taste add to pantry
• + salt and ground white pepper to taste add to pantry