In order to get the most from the fresh lemony flavor of these lemon sugar cookies, you really should “eat ’em upside-down”! Why? Because the sprinkle / light brushing of fresh lemon juice (your choice depending on the level of tartness you prefer) these cookies receive before baking makes their tops by far the most flavorful part. Turning the cookie upside down allows your taste buds to receive the maximum amount of lemony goodness per bite.
The recipe calls for fresh lemon balm, an herb belonging to the mint family, whose leaves release a wonderful, strong lemon scent and flavor when crushed or chopped. It is well-known for its calming qualities. In a pinch, you can substitute lemon zest, but I would highly recommend lemon balm if at all possible.