All you need;
Large bunches of fresh Basil, cleaned and dried
garlic, 2-6 cloves depending on your tastes
Pinch of salt
Extra Virgin Olive Oil
After you clean and towel dry the Basil, add to a food processor with the garlic and salt. Slowly add Olive Oil as you go. You only want enough oil to make a paste. Add paste to a sterilized glass jar and then cover with half an inch or so of Olive oil. Store in the back of the fridge and use by the spoonful when needed. It will stay bright green as long as you always keep it covered with oil.