The fun thing about making nut butters is that they are endlessly versatile. You can hone your favourite recipe or go for the “kitchen sink” approach and just toss in whatever you have on hand.
The essential thing to have to make nut-buttering enjoyable is a food processor. When I say a food processor, I mean a FOOD PROCESSOR. A regular blender will be tough but possible. I even find that high powered blenders, such as Vitamix, aren’t as good as the food processor because they have a more narrow base. The broad base allows you to not have to stop and scrape nut bits down from the sides every ten seconds – maybe only every minute or two instead! A nut butter making mission in Girona with Ella editor Jessi Braverman was thwarted because it appears that the food processor is not as ubiquitous in Spain as elsewhere. That being said, it is in my opinion totally worth it to go to whatever lengths necessary to secure one. If necessary, you can even resort to amazon.com.
Quick aside: I found my food processor for free on the side of the road a few years ago. I suspect someone was cleaning out old wedding gifts they had never used or something. In any case, I was mid-ride and knew that it wouldn’t be there if I went home and came back again with a backpack or appropriate carrying sack, so I took it apart and stashed the pieces in the straps of my bibs and rode home with extreme care. So with a bit of luck, you can even get one for free!