First buy 6 cups of fresh peanuts from the market.  Try to get a good deal.  Mine cost 4000 riel and I was pleased.  I think I could have gone lower though.  (4000 is 1 USD)

Get comfortable on your tiny plastic stool on the ground since that is where you prepare and cook meals in Cambodia.  Then turn your wok on low heat. Put the unroasted nuts in the wok. Do not put oil in your wok like I thought I should.  Continuously stir to keep from burning. Continue for 20 minutes.  Ask a Cambodian to taste your peanuts if they are done.  They will tell you if you need to cook them longer or not.  If you don't have a Cambodian, use your best judgment.

Go outside by the sugar cane fields or rice fields and sit in your best Asian squat.  If you don't know what that is, look it up.  It's how all of Asia waits for buses, cooks, uses the toilets, make peanut butter, etc.  Put roasted nuts in your round basket that you use for all your food rubbish.  Take the chaff off the nuts off until clean. Blow excess chaff off into the warm, Cambodian breeze.

Take 1/2 cup of peanuts at a time and crush into a paste in your mortar and pestle.  Find the most stable location in your wooden house on stilts to do this as to make a good attempt at being quiet like the Khmer always are.

Do this until all your peanuts are a fine paste.  When you get tired, just convince a fellow racer that it's fun.  And she'll finish the job for you.

Add 2 T of oil

Add 1/4 t salt to taste

Add 3 T sugar to taste

Stir and discover that you just made the MOST delicious peanut butter you will EVER taste!  And that is according to my entire team and the Cambodians!

Try being create by adding cinnamon, dried fruit, chocolate chips, granola or use cashews or almonds instead.

Total cost: just a bit over 4000 riel!  Don't forget to share.  Find a Khmer friend or a monk to share with since they probably haven't tried peanut better before.