Combine eggs, sugar, and salt in a large bowl.

Whisk together until well blended.

Gradually add flour and milk, alternating to avoid lumps.

Pour in melted butter and mix until smooth.

Adjust the batter's consistency with additional milk if needed; a thinner batter is preferable.

If refrigerating the batter for later use, add more milk to thin before cooking.

Heat a non-stick pan or cast-iron pan over medium-low heat.

Lightly grease the pan with butter.

Pour a small amount of batter onto the hot pan.

Tilt the pan to spread the batter evenly across the surface.

Cook until the crepe starts to brown on the bottom.

Flip the crepe and cook the other side until browned.

Remove the cooked crepe from the pan and set aside.

Repeat with the remaining batter, greasing the pan as needed.

Serve the crepes with sugar, jams, or preserves.

For a traditional Finnish experience, serve with strawberry jam and whipped cream.

Enjoy immediately as they are best served warm.