Instructions:

Place the peanuts in the food processor, turn it on, and let it run for about five minutes. Process until the peanuts have become a smooth and creamy “liquid” peanut butter.

Next, add the sugar, or sugar, and mix again. Stir in the salt.
You can either store the peanut butter in the fridge or keep it at room temperature if you believe that you will go through it fast enough.