Endless variations
You can use any nuts you have to hand - if you don't eat nuts try tiger-nuts (they are tubers!) coconut (it's a seed!) or other seeds such as sunflower, pumpkin, sesame, or chia. Add fruits such as lime, orange or raspberry, spices such as vanilla or ginger, or even coffee. Using different nuts is another way of adding interest. I like to have the nuts not too finely ground so there are still identifiable little bits of nut.