Crack the eggs into a bowl and lightly beat them with a fork
Place a non-stick pan over medium-low heat
Add the butter and let it melt gently
Pour the eggs into the pan
Stir constantly, scraping the bottom of the pan
After about 30 seconds, remove the pan from the heat and continue stirring
Return the pan to the heat and repeat this on-off process
Continue until the eggs are softly thickened but still glossy
Season with salt and pepper
Remove from heat and stir in crème fraîche if using