MAKE-AHEAD TIP: Stuffed tomatoes can be refrigerated up to 8 hours.
Capers: Capers are the flower buds of bushes that grow in the Mediteranean and parts of Asia. The buds are picked, sun-dried and then pickled in a vinegar brine. Capers range in size from very small (considered the best) to as large as the tip of your little finger. They are sold in glass jars and are found in the condiment or pickle section of supermarkets. Rinse the capers before using them to remove excess salt.