We returned to hot weather and our first tomatoes of the season. I picked some basil, grilled some very stale bread and made our favorite summer sandwich without even a trip to the store. What makes this simple open faced sandwich so extraordinary is the drizzle of balsamic vinegar. Not just any balsamic vinegar, but this one in particular is so good, you’ll want to drink it. I first discovered Olivier 25-year Barrel-Ages Balsamic Vinegar while working a Christmas season at Williams-Sonoma in Westport, CT. My friend Eileen insisted I buy a couple of bottles. My first thought was that I was spending more on vinegar than I was making in a day working at the store…even with the discount. I took her recommendation to stop at Stew’s and pick up a large piece of Parmesan Reggiano. Even my kids loved the flavors of the cheese dipped into the balsamic. It became an afternoon snack for weeks. It’s getting more difficult to find due to the high demand. Olivier in Napa Valley is sending out notifications by facebook, twitter and email when their shipment arrives. Even though I just opened this bottle, a birthday gift from Eileen, I’ve added my name to the list. I use it in marinades, vinaigrettes…almost everything. Have you tried it?