Often confused with marinating, macerating is a similar form of food preparation. The root is typically prepared by grinding (macerating) it using a wooden mortar and pestle. Various flavoured lao-Laos are made by macerating such additives as honey or scorpions. Macerating tissues is the process of separating the constituent cells of tissues. The addition rate of macerating enzyme ranges from 80-120mg/L. The tape might create a macerating and keratolytic environment, stimulating an immune response. Opium extract ("extractum opii") finally can be made by macerating raw opium with water.