You will need a fire safe bowl, a half cup of wine, a stick of incense, a
white candle and a photo of the person if possible.
If you can do so, do this outdoors. If not, inside is fine. Sit on the
ground/floor. Light the candle and the stick of incense that reminds you of
your friend. (IE. if he was an outdoorsman, select a woodsy scent like
evergreen or sandalwood, if he was a homebody, cinnamon, etc.) If you have a
photo of him, set it in front of you. If not, hold the image of your friend
firmly in your mind.
Take a small fire-safe bowl filled with the wine. Warm the wine over the
candle flame. Visualizing your friend surrounded by a soft white glow, wish
him well on his journey and assure him you will see him again in your next
life. Drink the wine and let yourself remember all the wonderful things you
and he shared.