Potassium bicarbonate is a white, crystalline powder that is commonly used as a food additive, a leavening agent in baking, and a buffering agent in various applications. It is a source of potassium, an essential mineral that helps maintain proper bodily functions, including muscle contractions and nerve signaling. In addition to its culinary uses, potassium bicarbonate is also utilized in agriculture to improve soil quality and as a mild antacid to relieve heartburn. It is considered safe for consumption and is often found in products like effervescent tablets and certain types of mineral water.