Molasses is a thick, syrupy sweetener that is rich in flavor with a dark brown color. It is derived from raw sugar cane as it is processed to make refined sugar. During this process, the sugar cane juice is boiled down, with sugar crystals removed at each stage. The dark syrup that remains after the third boiling becomes molasses.

Molasses has a robust, bittersweet flavor, with a hint of spiciness to it. It's commonly used in baking and cooking to sweeten and add depth to a diverse array of dishes. From gingerbread cookies to Boston baked beans and barbecue sauces, molasses lends a unique, rich sweetness that can't be replicated by any other sweetener.

There are different varieties of molasses available in the market which vary in sweetness, color, and flavor based on the stage of the boiling process they are from. The lighter version, also known as 'light or mild molasses', is sweeter, while 'dark or full molasses' is less sweet and has a stronger flavor. 'Blackstrap molasses', from the final boiling, is the darkest and densest in flavor.

Apart from being a sweetener, molasses is also a good source of nutrients. Blackstrap molasses, in particular, is high in iron, calcium, and magnesium.

Despite its sweetness, molasses should be used sparingly due to its strong, overpowering flavor. It's also crucial to store it in a cool, dark place to prevent it from crystallizing.

Molasses can typically be found in the baking aisle of a grocery store. It's usually near the sugar, honey, and other sweeteners.