Spinach Green (for coloring)

Wash a few handfuls spinach, press it out and pound in a mortar to a pulp; then press out the juice in a cloth; put the spinach liquid in a small saucepan; put it for a few minutes over the fire; as soon as the liquid curdles pour it on a fine sieve; let the water run off and the green which remains press through a fine sieve and put it in a well covered glass till wanted. Spinach green is used for coloring creams or puddings.