This 2-pack of sourdough starter jars is made of clear glass, each holding 32 ounces, and comes with a thermometer, cloth cover, and spatula cutter—everything needed for home sourdough starter maintenance and fermentation. The 32 oz. capacity is ideal for growing and storing sourdough starters, providing enough space for expansion during the fermentation process without overflow. The clear glass allows easy monitoring of the starter’s activity, including bubbling, rise, and texture changes, without opening the jar. The included thermometer helps track fermentation temperature, a key factor in maintaining a healthy starter. The cloth cover keeps dust and contaminants out while allowing air circulation, and the spatula cutter assists in mixing, scraping, and portioning the starter cleanly. The glass is non-reactive and non-porous, so it won’t leach chemicals or alter the starter’s flavor, and the 2-pack provides a practical quantity for alternating use or batch backups.