From the Kitchen: Lavender Lemonade

It's a very August beverage.

A good lemonade is all about the lemons, and I’ve found myself with a glut of them once again. If you read my Grub Street Diet, I was trying to use them in a new variation on my lemon-rosemary cake—also developed because of a sack of lemons—but the better idea struck me to make a lavender lemonade. (The cake might still come.)

This lavender simple syrup,…