In a small bowl, whisk together barley flour, salt, baking soda, baking powder, and sugar.
In a medium bowl, whisk egg until light. Add buttermilk and whisk to combine. While whisking, drizzle in butter.
Add flour mixture and mix together in a few quick strokes, leaving mixture slightly lumpy.
Heat griddle over medium heat. Brush with oil.
For 3-inch pancakes, scoop about 1 1/2 tablespoons of batter onto the griddle and cook until bubbles form and the edges of the pancake look slightly dry. Flip and cook on the other side for the same amount of time.
