1 cup unsalted butter, room temperature
			
		
			
				1¼ cup granulated sugar
			
		
			
				1  egg
			
		
			
				½ tsp lemon extract
			
		
			
				½ tsp ginger root, ground
			
		
			
				¼ tsp salt
			
		
			
				2¼ cup all-purpose flour
			
		
			
				⅔ cup crystallized ginger root, small pieces
			
		
			
				1 tbsp lemon peel, fresh or dried
			
		
			
				 --- optional
			
		
			
				  coarse sugar for rolling