Crepes with cream

3 tablespoons granulated sugar 1 cup all-purpose flour 3 large eggs 1 cup whole milk 1/2 cup warm water 3 tablespoons melted butter , lukewarm 1 pinch salt 1[...]

1 tablespoon chopped onion 2 tablespoons butter 1 tablespoon flour 1 cup light cream 4 ounces smoked salmon , diced 3 hard-cooked eggs, chopped 2 tablespoons[...]