To make the eggs, whisk together the eggs, heavy cream and a pinch of salt. Heat a large skillet over medium heat and add the butter. Pour in the egg mixture and let sit, without stirring, for 20 seconds. Stir with a wooden spoon, lifting and folding the eggs over from the bottom of the pan. Let it sit for another 10 seconds then stir and fold again. Repeat until the eggs are softly set and slightly runny in places, then remove from the heat. They will continue to cook as they sit.