Put the almonds in a food processor or blender and pulse for a few minuts or until crumbly.Continue to blend until the almonds reach a coarse meal consistency.If the almonds climb up the sides of your blender, just stir it around with a spatula and scrape down all the sides. Repeat the process a few times if necessary.Continue to blend until the almonds release their oil, changing their texture from crumbly to creamy.Just before the butter is ready, add any optional flavourings, then pulse to combine.Store in jars, and keep in the fridge for up to 1 month.Spread on toast, waffles or on top of pancakes or enjoy straight from the jar with a spoon.