Melt butter and let cool slightly. Put all ingredients into a blender and blend until smooth, or whisk together in a bowl. The batter will be thinner than a traditional American pancake batter.
3 tablespoons unsalted butter, 3 large eggs, 1 cup all-purpose flour, 1 tablespoon granulated sugar, 1 1/2 cups 2% milk, 1 teaspoon pure vanilla extract, 1/2 teaspoon ground cardamom, Pinch fine sea salt
Heat a nonstick pan medium heat. Add 1 teaspoon butter to the pan and swirl to coat (or use spray oil).
Pour about 1/3 cup of batter into the pan and swirl to coat the bottom of the pan. Cook for 2-3 minutes, until edges are dry and bubbles appear all over the top.
Carefully slide a spatula under the pancake, flip, and cook the other side for 2-3 minutes, until browned. Remove to a plate and repeat until all the batter is used, adjusting heat and adding additional butter between batches as needed.
Serve rolled or folded with fruit, chocolate, syrup, nuts, whipped cream, or jam.