In the formal language of economics, X and Y are substitutes if the demand for X increases when the price of Y increases, or a positive cross elasticity of demand.
Potting mix is the material that goes into a garden pot before you put seeds and plants into it. 1  It keeps the plant in place. 2  It holds water for the plantâs roots to soak up.  It contains nutrients that feed the plant.
The second style of Irish pot still whiskey is single pot still whiskey, made from a mixture of malted and unmalted barley completely distilled in a pot still. This latter style has also been historically referred to as pure pot still whiskey and Irish pot still whiskey, Older bottlings often bear these names.