Excess consumption of malt extract can cause digestive problems like gas, bloating, vomiting. (1)
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Malt extract usually comes in liquid or dry form. Liquid malt extract (LME) has molasses-like consistency, while dry malt extract (DME) is more of a fine powder. Dry malt extract has a longer shelf life than the liquid malt extract. It is a clarified water soluble extract of malted barley. It is used for its flavour.