Bistro Blends Balsamic Glaze products are prepared from a very old family recipe which originated in Modena, Italy over 400 years ago. These products are prepared under carefully controlled environment. No added sugars or preserves. Glaze is generally prepared by reducing a high quality balsamic vinegar. The process of boiling the vinegar to reduce it to this sweet thick rich flavor quality is very time consuming and requires an absolute knowledge and many year of experience. Hence the high cost to produce and mix with the various natural flavors. Price $20.00 each