Fertilizer preparation:

In a clean container, mix equal amounts of dry coffee grounds and grated potato peels.
Add filtered water to the coffee grounds and potato peel mixture to create a thick paste. Mix thoroughly until all ingredients are well blended.

Fertilizer application:

Use this mixture as a liquid fertilizer for your orchids. Dilute a small amount of paste in clean water at a ratio of one part fertilizer to four or five parts water.
Water your orchids with this fertilizer mixture once a month during the growing season (usually from late spring to fall). Be careful not to oversaturate the substrate and avoid applying fertilizer to the leaves or flowers to avoid burning.