Instructions 1.Pull out the plunger and pour marinade or sauce into the tube. Then put the plunger into the tube and press it. 2.You can also put the marinade in a container and suck the marinade from the container. The marinade or sauce will permeate into the meat when you tender it. How to clean You must use a gravy without a large fraction and the tenderer will work as it should. The marinator is supplied in a special lubricant. It is not harmful but must be washed before use. The needles through which the marinade is injected are turned inward, which allows it to be washed and not to stain everything around. For simplicity of washing it should be disassembled as in the figure and rinsed with warm water.