Meridian org barley malt extract 370gproduct details what is malt extract meridian malt extract is made from selected barley grain starch in grains is natures way of storing food for the new plant when the seed is stimulated by moisture and warmth to start growing naturally present enzymes convert the starch into sugars to be used by the germ as it grows into a young plant the malthouse simulates the spring conditions of moisture and warmth and encourages the barley to sprout after the